CN2162921Y

CN2162921Y - Trocar for excision of marrow nucleus from intervertebral disc through skin puncture

Info

Publication number: CN2162921Y
Application number: CN 92240342
Authority: CN
Inventors: 卢清鑫; 窦胜章; 张志强; 王怀全; 朱训山; 赵学谦
Original assignee: Central Hospital of Zibo
Current assignee: Central Hospital of Zibo
Priority date: 1992-12-30
Filing date: 1992-12-30
Publication date: 1994-04-27
Anticipated expiration: 2002-12-30

Abstract

The utility model belongs to a medical appliance for curing the protrusion of the nucleus gelatinosus of intervertebral disk in radiology. The utility model discloses a trocar for the nucleus pulposus excision of intervertebral disc through percutaneous puncture, which is composed of a trocar, a nucleus pulposus breaking device, a handle and a spring. According to the difference of the nucleus pulposus breaking device, multiple types can be designed. The utility model has the advantages of simple structure, convenient use, shortened usage time, high therapeutic effect, no hospitalization need, and low cost, and bigger nucleus pulposus tissue can be ablated. In addition, a patient's pain is small.

Description

Trocar for excision of marrow nucleus from intervertebral disc through skin puncture

This utility model belongs to the medical apparatus and instruments of the outstanding disease of treatment nucleus pulposus in the radiology, and its name is called percutaneous puncture nucleus pulposus excision trocar.

In the prior art, the outstanding disease of treatment lumbar nucleus pulposus is adopted the surgical operation therapy method more, and wound is heavy, complication is many, patient's misery is many, and the expense height is though also there is the homemade operating percutaneous puncture vertebral pulp resection instrument of minority, but most apparatus structure complexity, operating time is long, the infection rate height, and can only receive out the small part tissue of vertebral pulp on the puncture straight line.

The purpose of this utility model design is to avoid above-mentioned the deficiencies in the prior art and a kind of percutaneous puncture nucleus pulposus excision trocar is provided, and this needle construction is simple, and is easy to use, can shorten service time greatly, excise bigger nucleus pulposus, the curative effect height, need not be in hospital, patient's misery is little, and expense is low.

To achieve these goals, this utility model is to adopt following measure to realize: described percutaneous puncture nucleus pulposus excision trocar is made up of trocar, vertebral pulp system crushing device, handle and spring, vertebral pulp system crushing device is connected the back and inserts in the trocar in the cover needle stand with handle, trocar is hollow tubular structure, one end of trocar links to each other with the cover needle stand, plural rake tooth is arranged on the other end, and spring is contained in the handle.

To achieve these goals, this utility model also can adopt a day following measure to realize: described vertebral pulp system crushing device is made up of the trepan pin and the pin heart, the trepan pin is a tubular structure, and the upper end links to each other with handle, and disconnected down is laciniation, nook closing member inserts in the trepan pin, pack on the nook closing member in the handle, the outer wall of nook closing member upper end is connected with a horizontal handle in the handle, and spring is equipped with in horizontal handle lower end, handle is an ellipse garden shape nylon handle, and the groove of " L " shape-shape is arranged in the handle.

To achieve these goals, this utility model also can adopt following measure to realize: described vertebral pulp system crushing device is by the strand tooth, shed stick, extension tube attached is formed, shed stick is inserted in the inner chamber of outer knot pipe, the shed stick upper end links to each other with handle and spring, the lower end links to each other with the strand tooth, the strand tooth is that the lease rods interconnection more than two forms, per two lease rods are crossed as " a ten " word, two relative both wings end points of " ten " word are interconnected to junction point up and down, last junction point is fixed on the lower end of shed stick, trocar sheath is enclosed within the periphery of shed stick and spring, trocar sheath outer wall upper end, and symmetry has connected two hand holes.

To achieve these goals, this utility model can also adopt following measure to realize, described vertebral pulp system crushing device is made up of interior cutting needle and outer cutting needle, interior cutting cushion is the inner chamber of cutting needle outside, two symmetric cutting holes are all arranged on the two needle point end walls, between the outer wall of interior cutting needle and the inwall of outer cutting needle the space is arranged, be intake antrum, interior cutting needle is hollow cylindrical body, and it is hollow to be water chamber, and the upper end and the handle of interior cutting needle connect together, outlet is positioned at the upper end of handle top cutting needle, water inlet is connected on the sidewall of outer cutting needle by the water inlet actuator, and current advance from intake antrum, flows out along outlet to water chamber.In use, nucleus pulposus is rubbed by cutting needle, and be sucked out downstream external, thereby reach the purpose of curing the disease.

In order to be illustrated more clearly in this utility model, this utility model is done further explanation below in conjunction with accompanying drawing:

Fig. 1 is a kind of structural representation of the present utility model;

The structural representation that Fig. 2 is connected with handle 1 spring 3 for vertebral pulp system crushing device;

Fig. 3 is the vertebral pulp system crushing device of embodiment 3 and the syndeton sketch map of handle 1 and spring 3;

Fig. 1 is a kind of structural representation of the present utility model, is embodiment 1 of the present utility model.

Embodiment 1 explanation this utility model is that trocar 5, vertebral pulp system crushing device, handle 2 and spring 3 are formed, vertebral pulp system crushing device is to be connect by two needle guards to form, be connected the back with handle 1 and insert 5 li of trocars for 4 li from the cover needle stand, trocar 5 is hollow tubular structures, one end of trocar links to each other with cover needle stand 4, three rake tooths 7 are arranged on the other end, and spring 3 is contained in 1 li on handle.The belled vertebral pulp system crushing device of two pins is that the trepan pin 6 pin hearts 2 overlap inside, trepan pin 6 is a tubular structure, the upper end links to each other with handle, disconnected down is laciniation 8, and nook closing member 2 inserts in the trepan pins 6, packs in the handle 1 in nook closing member 2 upper ends, the outer wall of nook closing member 2 upper end is connected with a horizontal handle 10 in the handle 1, spring 3 is equipped with in horizontal handle 10 lower ends, and handle 1 is an ellipse garden shape nylon handle, and the groove of " L " shape is arranged in the handle 1.

Fig. 2 is vertebral pulp system crushing device and handle 1, the structural representation that spring 3 connects, with after the trocar logotype be embodiment 2 of the present utility model, embodiment 2 is that with the difference of embodiment 1 vertebral pulp system crushing device is by strand tooth 15, shed stick 12, extension tube attached 13 is formed, shed stick 12 is inserted in the inner chamber of outer knot pipe 13, shed stick 12 upper ends link to each other with handle 1 and spring 3, the lower end links to each other with strand tooth 15, strand tooth 15 is that the lease rods interconnection more than two forms, per two lease rods are crossed as " a ten " word, two relative both wings end points of " ten " word are interconnected to two junction points up and down, last junction point 14 is fixed on the lower end of shed stick 12, trocar sheath 13 is enclosed within the periphery of shed stick 12 and spring 3, trocar sheath 13 outer walls upper end, symmetry has connected two hand holes 11.

Fig. 3 is the vertebral pulp system crushing device of this utility model embodiment 3 and the syndeton sketch map of handle 1 and spring 3.

Embodiment 3 is with the difference of embodiment 1: vertebral pulp system crushing device is made up of interior cutting needle 17 and outer cutting needle 19, interior cutting needle 17 is inserted in the inner chamber of outer cutting needle 19, two symmetric cutting holes 22 are all arranged on the two needle point end walls, between the inwall of the outer wall of interior cutting needle 17 and outer cutting needle 19 space is arranged, this space is an intake antrum 20, interior cutting needle 17 is hollow cylindrical body, it is hollow to be water chamber 21, the upper end of interior cutting needle 17 and handle 1 connect together, the mouth of a river 16 is positioned at the upper end of the top cutting needle 17 of handle 1, water inlet is connected on the sidewall of outer cutting needle 19 by water inlet actuator 18, current advance from intake antrum 20, flow out along outlet 16 to water chamber 21.

Enforcement of the present utility model has following meaning in reality:

Simple in structure, easy to use, can shorten service time greatly, can excise bigger nucleus pulposus, the curative effect height need be in hospital, and patient is painful few, and expense is low.

Claims

1, a kind of percutaneous puncture nucleus pulposus excision trocar, it is characterized in that forming by trocar 5, vertebral pulp system crushing device, handle 1 and spring 3, vertebral pulp system crushing device is connected the back and inserts 5 li of trocars for 4 li from the cover needle stand with handle 1, trocar 5 is hollow tubular structures, one end of trocar 5 links to each other with cover needle stand 4, plural rake tooth 7 is arranged on the other end, and spring 3 is contained in 1 li on handle.

2, a kind of according to the described percutaneous puncture nucleus pulposus excision of claim 1 trocar, it is characterized in that described vertebral pulp system crushing device is made up of the trepan pin 6 and the pin heart 2, trepan pin 6 is a tubular structure, and the upper end links to each other with handle 1, and disconnected down is laciniation 8, nook closing member 2 inserts in the trepan pin 6, pack in the handle 1 in nook closing member 2 upper ends, the outer wall of nook closing member 2 upper end is connected with a horizontal handle 10 in the handle 1, and spring 3 is equipped with in horizontal handle 10 lower ends, handle 1 is an ellipse garden shape nylon handle, and the groove 9 of " L " shape is arranged in the handle 1.

3, a kind of according to the described percutaneous puncture nucleus pulposus excision of claim 1 trocar, it is characterized in that described vertebral pulp system crushing device is by strand tooth 15, shed stick 12, extension tube attached 13 is formed, shed stick 12 is inserted in the inner chamber of outer knot pipe 13, shed stick 12 upper ends link to each other with handle 1 and spring 3, the lower end links to each other with strand tooth 15, strand tooth 15 is that the lease rods interconnection more than two forms, per two lease rods are crossed as " a ten " word, two relative both wings end points of " ten " word are interconnected to junction point up and down, last junction point 14 is fixed on the lower end of shed stick 12, trocar sheath 13 is enclosed within the periphery of shed stick 12 and spring 3, trocar sheath 13 outer walls upper end, and symmetry has connected two finger holes 11.

4, a kind of according to the described percutaneous puncture nucleus pulposus excision of claim 1 trocar, it is characterized in that vertebral pulp system crushing device is made up of interior cutting needle 17 and outer cutting needle 19, interior cutting needle 17 is inserted in the inner chamber of outer cutting needle 19, two symmetric cutting holes 22 are all arranged on the two needle point end walls, between the inwall of the outer wall of interior cutting needle 17 and outer cutting needle 19 space is arranged, be intake antrum 20, interior cutting needle 17 is hollow cylindrical body, it is hollow to be water chamber 21, the upper end of interior cutting needle 17 and handle 1 connect together, outlet 16 is positioned at the upper end of handle 1 top cutting needle 17, water inlet is connected on the sidewall of outer cutting needle 19 by water inlet actuator 18, current advance from intake antrum 20, flow out along outlet 16 to water chamber 21.