CN208741125U - A kind of bendable bone cement injector - Google Patents

Abstract

The utility model relates to a kind of bendable bone cement injectors, belong to the field of medical instrument technology, including core rod seat, the core rod seat is connected with core bar, the front end of core bar be provided with can turn of bilge, it is described can turn of bilge include helical slot, the helical slot is along can be formed with gap in the circumferential direction of turn of bilge.The utility model has by the way that helical slot is arranged in the front end of injector, can be realized the bending of full angle, can pass through the straight section and rounded sections of service aisle, it is ensured that the advantages of bone cement fast and accurately injects.

Description

A kind of bendable bone cement injector

Technical field

The utility model relates to a kind of bendable bone cement injectors, belong to the field of medical instrument technology, be particularly suitable for through Skin pyramid plastic operation.

Background technique

The middle-aged and the old is since compression fracture of vertabral body easily occurs for osteoporosis, and palpus long-term bed, complication is more, Neng Gouzeng Add centrum intensity, stablize backbone, the Minimally Invasive Surgery for preventing Vertebral Compression degree from aggravating is the main means for treating such patient.Through Skin vertebroplasty is as a kind of minimally invasive spine surgical, using the method for percutaneous puncture, through pedicle of vertebral arch or directly into centrum Inject bone cement, centrum strength and stability can be enhanced, can prevent from collapsing, alleviate pain in back and loin, or even can part or almost Full recovery vertebral height.

Currently, common are in percutaneous vertebroplasty operation, straight is punctured and bending punctures, and straight puncture procedure is simple, but It is frequently necessary to carry out patient opposite side puncture or punctures the filling requirement for being just able to satisfy operation repeatedly, thus during surgery to patient Damage it is larger and need surgical instruments increase, surgical treatment time and surgery cost are also more.

Occur bending puncture in this context, bending channel can be established from patient body unilateral side and realizes the bone for needing angle Cement filling, can reduce the damage in operation to patient, and still, existing bending puncture is still that cooperation straight injector uses, The reason is that, bone cement injector main function is to be pushed into bone cement in filling cavity, therefore bone cement injector needs Certain hardness, if the tip designs elbow in injector will be difficult to straight section by service aisle.

Therefore, although existing bending punctures cooperation, straight injector can reduce the foundation of service aisle, can reduce hand To the damage of patient in art, but straight injector not can cooperate well with bending service aisle, especially the elbow of end Position, thus doctor is difficult to be precisely controlled the bone cement amount of injection, also, bone cement in percutaneous vertebroplasty operation Injection needs to be rapidly injected in the toothpaste-like this specific period, therefore, needs to design one kind and can puncture with bending to cooperate Bendable bone cement implantation tool, to reduce art in patient damage while realize bone cement accurate injection.

Summary of the invention

To solve the above technical deficiency, the utility model provides a kind of bendable bone cement injector, by infusing Enter device front end setting helical slot, can be realized the bending of full angle, can pass through service aisle straight section and Rounded sections, it is ensured that bone cement fast and accurately injects.

The technical solution of the utility model is as follows: a kind of bendable bone cement injector, including core rod seat, and the core rod seat connects Be connected to core bar, the front end of core bar be provided with can turn of bilge, it is described can turn of bilge include helical slot, the helical slot is along bendable Gap is formed in the circumferential direction in portion.

The technical solution of the utility model further include: the core bar is tubular structure, and core bar includes tube wall and cavity, spiral shell Revolving that shape fluting is located at can be on the tube wall of turn of bilge and the depth of helical slot and the thickness of tube wall are identical, can turn of bilge front end setting There is end socket.

The technical solution of the utility model further include: the helical slot around can the tube wall periphery of turn of bilge be continuously arranged, End socket be welded on can turn of bilge front end.

The technical solution of the utility model further include: the outside of the core bar is provided with outer tube, and the front end of outer tube is provided with The tail end of elbow, outer tube is connected with outer pipe seat.

The technical solution of the utility model further include: the core bar is made of metal, and the outer tube is made of plastics.

The beneficial effects of the utility model are: by the front end of core bar setting by helical slot formed can turn of bilge, Space is provided for the bending of the body of rod using the gap that helical slot is formed on core bar, also, fluting is designed as spiral shape, Thus the bending that can realize full angle there are gap in the circumferential direction of core bar, when core bar is pushed into bone into centrum along outer tube When cement passes through the bend part of outer tube, core bar can turn of bilge can be formed under the effect of the guide and limit of outer pipe bend and be bonded with it Fit angle, thus, it is possible to which the bone cement of bend part is accurately injected, bone cement be fully injected into outward extract core bar when, Can turn of bilge first pass through the bend part of outer tube, under the guide and limit effect of elbow, can turn of bilge form camber identical with elbow, Can turn of bilge pass through the straight section that outer tube is entered after elbow, at this time under the restriction effect of straight section, can turn of bilge again Revert to the straight being bonded with outer tube straight section, using helical slot formed can turn of bilge can realize that straight and bending become It changes, so that achievable core bar is in the smooth insertion with elbow outer tube and extracts, it is complete the service aisle established can be punctured with bending At good cooperation, the accurate injection of bone cement can be realized while patient's damage in reducing art.

Detailed description of the invention

Fig. 1 is the schematic diagram of the utility model.

Fig. 2 is the enlarged diagram in the portion A in Fig. 1.

Fig. 3 is the schematic cross-sectional view in the portion A in Fig. 1.

Fig. 4 is the schematic diagram of the utility model cooperation outer tube.

1, core rod seat, 2, core bar, 3, can turn of bilge, 4, end socket, 5, helical slot, 6, tube wall, 7, cavity, 8, outer tube, 9, Elbow, 10, outer pipe seat, 11, gap.

Specific embodiment

Below in conjunction with attached drawing, by embodiment, the utility model is described in further detail.

As shown in Figures 1 to 4, a kind of bendable bone cement injector of the utility model, be mainly used for percutaneous vertebral body at Need to establish bending channel in shape art to reduce in the situation to patient's damage, including core rod seat 1 and core bar 2, in order to Core bar 2 is set to pass through the outer tube 8 with elbow 9 in push-in bone cement, in the front end of core bar 2, that is, far from core rod seat 1 One end, be provided with can turn of bilge 3,

In the utility model, can turn of bilge 3 formed by helical slot 5, that is, can the outside of turn of bilge 3 opened up along its circumferential direction Have helical slot 5, thus can turn of bilge 3 the external gap 11 formed in circumferential direction, can be mentioned using the gap 11 for the body of rod For flexible space.Also, the gap 11 is set up along the week of core bar 2, thus for the body of rod circumferential full angle bending It is provided with space, with the service aisle of this different camber that can puncture foundation suitable for bending, two can have There is flexible bending direction, is operated convenient for doctor.

In the embodiments of the present invention, core bar 2 is designed as tubular structure, includes tube wall 6 and cavity 7, in tube wall 6 The bending effect that upper setting helical slot 5 can facilitate processing, while the presence of cavity 7 being cooperated to have can be realized.In order to The smooth push-in for enough realizing bone cement, is welded with end socket 4 in the forward terminal of core bar 2, in addition, in order to realize can turn of bilge 3 it is flexible Bendable and reply effect, helical slot 5 is continuously set on tube wall 6.

When carrying out percutaneous vertebroplasty operation, filling bone cement is spare in outer tube 8, and curved service aisle is established It afterwards, will be in outer tube 8 along the insertion of outer tube 8 using the core bar 2 that front end is provided with helical slot 5 when and bone cement reaches toothpaste-like The toothpaste-like bone cement of straight position and bend part injects in centrum, later again extracts core bar 2 out along outer tube 8, utilizes core bar 2 By helical slot 5 formed can turn of bilge 3, can the guide and limit of 8 straight of outer tube and bend part effect under realize straight with The transformation of bending can puncture the work established with bending to complete core bar 2 in the smooth insertion of the outer tube 8 with elbow 9 and extract Make channel and complete cooperation well, can realize the accurate injection of bone cement while patient's damage in reducing art.

The above is only the preferred embodiment of the utility model, not does limit in any form to the utility model System, done any modifications, equivalent replacements, and improvements etc., should be included in this reality within the spirit and principle of the utility model Within novel protection scope.

Claims (5)

1. a kind of bendable bone cement injector, it is characterised in that: including core rod seat (1), the core rod seat (1) is connected with core bar (2), the front end of core bar (2) be provided with can turn of bilge (3), it is described can turn of bilge (3) include helical slot (5), the spiral shape is opened Slot (5) edge can be formed with gap (11) in the circumferential direction of turn of bilge (3).

2. a kind of bendable bone cement injector as described in claim 1, it is characterised in that: the core bar (2) is hollow pipe knot Structure, core bar (2) include tube wall (6) and cavity (7), and helical slot (5) is located at can be on the tube wall (6) of turn of bilge (3) and spiral shape Slot (5) depth it is identical as the thickness of tube wall (6), can the front end of turn of bilge (3) be provided with end socket (4).

3. a kind of bendable bone cement injector as claimed in claim 2, it is characterised in that: the helical slot (5) is around can Tube wall (6) periphery of turn of bilge (3) is continuously arranged, end socket (4) be welded on can turn of bilge (3) front end.

4. a kind of bendable bone cement injector as described in claims 1 to 3 is any, it is characterised in that: outside the core bar (2) Portion is provided with outer tube (8), and the front end of outer tube (8) is provided with elbow (9), and the tail end of outer tube (8) is connected with outer pipe seat (10).

5. a kind of bendable bone cement injector as claimed in claim 4, it is characterised in that: the core bar (2) is made of metal, The outer tube (8) is made of plastics.