CN100569192C

CN100569192C - Hole enlarging device for orthopedics department

Info

Publication number: CN100569192C
Application number: CNB200510095869XA
Authority: CN
Inventors: 左适佑; 卢士钧
Original assignee: Individual
Current assignee: Spirit Spine Holdings Corp Inc
Priority date: 2005-09-06
Filing date: 2005-09-06
Publication date: 2009-12-16
Anticipated expiration: 2025-09-06
Also published as: CN1927128A

Abstract

The present invention is relevant a kind of hole enlarging device for orthopedics department, refers to a kind of hole enlarging device for orthopedics department with reaming chamber especially.A kind of hole enlarging device for orthopedics department, it comprises: a reaming body, it is the body that an end opening one end is remained silent; And a connector, it is the opening combination with this reaming body; It is characterized in that: the closed end of this reaming body or nearly closed end place have a preformed reaming chamber, and this reaming body to contain this preformed reaming chamber be integrally formed person.

Description

Hole enlarging device for orthopedics department

Technical field

The present invention is relevant a kind of hole enlarging device for orthopedics department, refers to a kind of hole enlarging device for orthopedics department with reaming chamber especially.

Background technology

In the bone surgery, often must carry out reaming in medullary cavity or vertebral body earlier.Common orthopaedics counter-boring techniques has two kinds at present: a kind of is to utilize the mechanical type Counterboring apparatus (for example referring to United States Patent (USP) the 6th, 676, No. 665) carry out reaming, but the greatest problem of this technology is: squeeze broken spongy bone (cancellous bone) fragment during reaming, often fall in Counterboring apparatus, this Counterboring apparatus is blocked, cause first assembly of reaming can't regain (reinstatement), even whole Counterboring apparatus be stuck in the reaming position, can't take out; Another kind is to utilize the filled type Counterboring apparatus, the series of products of U.S. Kyphon company for example, and the present invention also is the filled type Counterboring apparatus.The series of products of Kyphon company, be balloon miscellaneous, to cooperate different demands, the relevant patent of its device such as No. the 5972015th, United States Patent (USP) itself, No. 6066154, No. 6235043, No. 6423083, No. 6607544, No. 6623505, No. 6663647, No. 6716216 etc., the relevant patent of its using method (expanding method) such as No. the 5972015th, United States Patent (USP), No. 6048346, No. 6235043, No. 6248110, No. 6280456, No. 6440138, No. 6607544, No. 6716216, No. 6719761, No. 6726691 etc.Combine Counterboring apparatus and the expanding method of opinion Kyphon,, liquid (for example water) is poured into balloon (according to different demands nothing more than utilizing high pressure, use balloon miscellaneous) in, make balloon expansion,, reach the purpose of reaming to push medullary cavity or Intrapyramidal spongy bone.But this device or method have many shortcomings, and for example: this balloon must connect irritates mouth (nozzle), so high pressure may cause balloon by irritating the phenomenon that mouth comes off when pouring into liquid; Moreover, for cooperating different demands, balloon must design inner limit resistance part part (internal restraint) or outside limit resistance part part (external restraint), for example referring to No. the 6066154th, above-mentioned United States Patent (USP), or the Counterboring apparatus of particular design, for example No. the 6235043rd, United States Patent (USP), makes that the manufacturing of balloon and use are relatively more difficult comparatively speaking.The present invention utilizes integrally formed reaming body as the hole enlarging device for orthopedics department main body, can solve the various shortcomings of above-mentioned traditional Counterboring apparatus simultaneously.

Summary of the invention

A purpose of the present invention is to provide a kind of hole enlarging device for orthopedics department.

Another object of the present invention is to provide a kind of body hole enlarging device for orthopedics department of remaining silent of the preforming reaming chamber that has.

Another purpose of the present invention is to provide a kind of body hole enlarging device for orthopedics department of remaining silent of the pre-expansion reaming chamber that has.

Embodiment

Hole enlarging device for orthopedics department of the present invention, it comprises:

One reaming body, it is the body that an end opening one end is remained silent; And

A connector, it is the opening combination with this reaming body;

It is characterized in that: the closed end of this reaming body or nearly closed end place have a preformed reaming chamber, and this reaming body to contain this preformed reaming chamber be integrally formed person.

Above-mentioned reaming body is the instrument in the operation process, therefore, should be made by having suitable elasticity and harmless material, with the polymer that adopts the tool bio-compatibility for better, for example available PU (polyurethane, Poly-Urethane), silica gel (silicone rubber) etc.

Above-mentioned this reaming chamber is closed end or the nearly closed end place that is positioned at this reaming body, is preferable with the nearly closed end place that is positioned at this reaming body.Above-mentioned preforming reaming chamber can be such as injection moulding, molded, pre-expansion molding, the pre-expansion molding of molding etc., is preferable with the pre-expansion molding of molding.The pre-expansion molding of so-called herein molding is referring to Fig. 9 A to 9C, Figure 10 A to 10C and explanation thereof.

Above-mentioned this body in case of necessity, can have a bending section near near the reaming chamber, in order to meet the not operation demand when the guiding direction of guid needle of reaming position.

Above-mentioned this body periphery can further contain a protecting tube in case of necessity, in order to when the reaming, avoids the improper expansion partly of non-reaming chamber.The combination of this protecting tube and this body, available arbitrary known combination, for example engaging.

Above-mentioned this body inside further contains in case of necessity leads the filling pin, treats the reaming position in order to conveniently the reaming body is contained the importing of reaming chamber, and in order to lead the filling pin via this liquid (making water usually) is poured in the reaming chamber.This is led and irritates pin and body combination, can be any known mode, comprises that merely this being led the filling pin inserts in the body.If belong to the latter, then lead filling pin external diameter and should approximate this internal diameter of tube body.

The combination of above-mentioned this reaming body and this adapter can be any known combination.Because the junction of reaming body and this adapter is external, be preferable therefore in the bonding mode.

Above-mentioned adapter, its shape there is no specific limited.But because of this adapter must external tee T, irritate rifle or flexible pipe, so its external place can put a junction in case of necessity, and screw part for example is set.This adapter can be any known adapter again, for example also can adopt tee T as adapter, referring to following Fig. 8-A, 8-B.

For further specifying the present invention, cooperate graphic being described as follows with preferred embodiment now:

Description of drawings

Fig. 1 to 5 is respectively the present invention's the 1st to 5 preferred embodiment.

Fig. 6-A, 6-B are the present invention's the 6th preferred embodiment, and wherein Fig. 6-A is an explosive view, and Fig. 6-B is in conjunction with figure.

Fig. 7-A, 7-B are the present invention's the 7th preferred embodiment, and wherein Fig. 7-A is an explosive view, and Fig. 7-B is in conjunction with figure.

Fig. 8-A, 8-B are the present invention's the 8th preferred embodiment, and wherein Fig. 8-A is an explosive view, and Fig. 8-B is in conjunction with figure.

Fig. 9-A to 9-C is the manufacturing process sketch map of the present invention's the 2nd preferred embodiment.

Figure 10-A to 10-C is the manufacturing process sketch map of another (the 9th) preferred embodiment of the present invention.

The schematic flow sheet of Figure 11-A to Figure 11-when I uses for the present invention.

Reference numeral

1. reaming

body

11A, 11B, 11C, 11D. reaming chamber

12. body 121. reamings

122. protecting tube 13. bending sections

Irritate pin 2A, AB, 2C, 2D. adapter 14. lead

3. tee T 31. conducting knobs

51. guide wire 52. auger boring devices

53. injection tube 54. high pressure are irritated rifle and are taken over

55. high pressure is irritated rifle 6. vertebral bodys

7.

mould

71A, 71B. die hole

The specific embodiment

1 is the reaming body of Counterboring apparatus of the present invention among Fig. 1, and 2A is the adapter of Counterboring apparatus of the present invention, and 11A and 12 is respectively the reaming chamber and the body of

reaming body

1, and 111 are the protection portion of reaming chamber 11A tail end, puncture this reaming chamber 11A in order to prevent guid needle.TPU (the Thermal elastic Poly-Ureathane) body that is one of the forming of reaming body 1 wherein, the reaming chamber is the reaming chamber of injection molding, and this reaming body 1 and this adapter 2A are with the instant glue combination.

Fig. 2 is Fig. 1 roughly the same, and

label

1,2A, 111,12 define identical with Fig. 1, and only wherein 11B is pre-the expansion and the restorable reaming of part chamber, is different from the reaming chamber that Fig. 1 is an injection molding.

Fig. 3 is Fig. 2 roughly the same, and only this reaming chamber 11C does not contain protection portion (label 111 among Fig. 2).

Fig. 4 is Fig. 2 roughly the same, and only this reaming chamber 11B and this body are 12, and a bending section 13 is arranged.

Fig. 5 is Fig. 4 roughly the same, only in this reaming body 1, further contain to lead and irritate pin 14, this is led and irritates pin 14 is to be sticked in this reaming body 1 inside, only in case of necessity, also can change its combination, for example make this lead the peristome gummed of irritating pin 14 and this reaming body 1, or make this lead filling pin 14 and this adapter 2A engaging or fastening etc.

The same Fig. 5 of Fig. 6-category-B, only its reaming body 1 does not contain bending section (label 13 among Fig. 5).Fig. 6-A is the explosive view of Fig. 6-B.

Fig. 7-A and 7-B be Fig. 6-A and 6-B roughly the same, but further contains a tee T 3, and this tee T 3 and this adapter 2A are with the combination of bonding mode, only knows this skill personage and all knows and availablely replace it such as any known means such as engaging, fastenings.

Fig. 8-A, 8-B be Fig. 2 roughly the same, but with tee T 3 directly as adapter, for cooperating commercially available tee T, the opening of the body 12 of present embodiment has an expansion mouth 121, in order to bind with this tee T, wherein Fig. 8-A is an explosive view, Fig. 8-B be in conjunction with scheming.

Fig. 9-A to 9-C is the manufacturing process sketch map of the present invention's the 2nd preferred embodiment, and wherein Fig. 9-A demonstration will contain in the nib (71A) of not finishing pre-expansible reaming body importing mould 7 as yet; Fig. 9-B shows that irritating the rifle (not shown) with high pressure pours into water, makes the reaming body locate to expand in advance the shape of nib 71A near remaining silent, shown in label 11B; Fig. 9-C shows the water of extracting out in the Counterboring apparatus, and this Counterboring apparatus is detached mould, and at this moment, the reaming chamber partly restores to the original state.

Figure 10-A to Figure 10-C difference is Fig. 9-A to 9-C roughly the same, and only this mould 7 has and difform nib 71B-bimodal shape nib shown in Figure 9, therefore the reaming chamber of making bimodal shape.11D is the shape in reaming chamber when filling water among Figure 10-B, and 11D is the partly restorable reaming chamber, back that discharges water among Figure 10-C.

Figure 11-A shows: auger boring device 52 via guide wire 51, is pierced vertebral body 6; Figure 11-B shows: auger boring device 52 pierces vertebral body 6, forms hole 61; After boring is finished, take out auger boring device 52, but 51 temporary transient (not shown) that keep of guide wire; Figure 11-C shows: Counterboring apparatus of the present invention is connected tee T 3, a pipe connects injection tube 53 in the tee T, one pipe connects the adapter 54 that high pressure is irritated rifle 55, and the conducting knob 31 on the rotation tee T, make high pressure irritate rifle 55 see through take over 54 and the leading of reaming body of Counterboring apparatus of the present invention irritate pin 14 conductings, injection tube 53 then with then not conducting of said two devices, in this preferred embodiment, reaming body periphery has protective sleeve 122, and inside then contains to lead irritates pin 14; Figure 11-D shows high pressure irritated water in the rifle 55, irritates pin 14 and irritates in advance in the 11B of reaming chamber via leading; Figure 11-E shows: rotate the conducting knob 31 on the tee T, make the leading of reaming body of injection tube 53 and Counterboring apparatus of the present invention irritate pin 14 conductings, and high pressure is irritated rifle 55 and is taken over 54, then with not conducting of said two devices, and, make inner partly vacuum (internal pressure is less than an atmospheric pressure) or the essence vacuum state of forming of Counterboring apparatus of the present invention by water and air that injection tube 53 is extracted out in the Counterboring apparatus of the present invention; Figure 11-F shows: the reaming body insertion Figure 11-B of the Counterboring apparatus of the present invention Figure 11-E state is under removed in the guide wire 51 behind the auger boring device 52, and the conducting knob 31 on the rotation tee T, make high pressure irritate rifle 55 see through take over 54 and the leading of reaming body of Counterboring apparatus of the present invention irritate pin 14 conductings, injection tube 53 then with not conducting of said two devices; Figure 11-G shows: the sample attitude of reaming chamber 11B in vertebral body 6 of Counterboring apparatus of the present invention among Figure 11-F; Figure 11-H shows: high pressure is irritated water in the rifle 55, irritate pin 14 and pour among the 11B of reaming chamber via leading, make reaming chamber 11B be expanded to the expection size, in order to several spongy bone of opening; Figure 11-I shows: the sample attitude of reaming chamber 11B in vertebral body 6 of Counterboring apparatus of the present invention among Figure 11-H.So far, reached vertebral body reaming purpose.After this, repeat roughly the same dewatering of Figure 11-E, make reaming chamber 11B be shrunk to original state again, in order to taking out Counterboring apparatus (not shown) of the present invention by vertebral body.

Above-mentioned Figure 11-C, 11-D, 11-D pour water in advance external, extract the water and air among the 11B of reaming chamber again out, though non-imperative can prevent to pour water in the body accidentally, cause reaming chamber 11B to break, and cause original air in the reaming chamber to cause the accident of thrombosis.

Counterboring apparatus of the present invention, itself and the junction of irritating rifle or tee T are external, therefore, even get loose, also can not cause surgical puzzlement.In the balloon reaming art that background technology disclosed, the balloon and the junction of irritating mouth but in vivo, for example in the vertebral body or in the medullary cavity, if in the operation, balloon and the combination of irritating mouth get loose, and will cause surgical very big puzzlement.

Moreover, by the shown manufacturing process of Fig. 9-A, 9-B, 9-C, 10-A, 10-B, 10-C and explanation thereof, Counterboring apparatus of the present invention as can be known, its manufacturing mode is simple.And can clearly find out by Figure 11-A to Figure 11-I and explanation thereof: when using Counterboring apparatus of the present invention, its operation method is simpler than traditional balloon reaming operation, and safety is also higher.

Claims

1. hole enlarging device for orthopedics department, it comprises:

A connector, it is the opening combination with this reaming body;

It is characterized in that: the closed end of this reaming body or have a preformed reaming chamber in abutting connection with the closed end place, and this reaming body to contain this preformed reaming chamber be integrally formed person.

2. Counterboring apparatus as claimed in claim 1, wherein this preformed reaming chamber is a pre-expansible reaming chamber.

3. Counterboring apparatus as claimed in claim 2, wherein this body has a bending section in place, adjacency reaming chamber.

4. as claim 2 or 3 described Counterboring apparatus, wherein this body inside further contains and leads the filling pin.

5. as claim 2 or 3 described Counterboring apparatus, wherein this body outside further contains a protecting tube.

6. Counterboring apparatus as claimed in claim 4, wherein this body outside further contains a protecting tube.

7. Counterboring apparatus as claimed in claim 4, wherein this adapter is a tee T.

8. Counterboring apparatus as claimed in claim 5, wherein this adapter is a tee T.

9. Counterboring apparatus as claimed in claim 6, wherein this adapter is a tee T.