CN212307996U

CN212307996U - Clamp special for manufacturing bone bolt

Info

Publication number: CN212307996U
Application number: CN202020312942.4U
Authority: CN
Inventors: 曹建斌; 全华山; 李云
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2021-01-08
Anticipated expiration: 2030-03-13

Abstract

The utility model relates to a medical treatment and health supplies technical field especially relate to a anchor clamps of preparation bone bolt are exclusively used in. The extrusion device comprises a circular truncated cone-shaped body with two open ends, wherein a piston type extrusion head is arranged at the large head end of the circular truncated cone-shaped body; the small head part of the circular truncated cone-shaped body forms an opening and closing door facilitating the bone bolt to be taken out through a part of small head wall cut by the L-shaped notch; the small head of the body is also provided with a clamping hoop for clamping the opening and closing door and clamping and extruding the small head in the radial direction. The utility model discloses an anchor clamps simple structure, convenient to use can swiftly make the bone bolt.

Description

Clamp special for manufacturing bone bolt

Technical Field

The utility model relates to a medical treatment and health supplies technical field especially relate to a anchor clamps of preparation bone bolt are exclusively used in.

Background

In artificial knee joint replacement, particularly in primary artificial knee joint replacement, in order to accurately cut six bone cutting surfaces at the distal end of a femur, intramedullary or extramedullary positioning is required, firstly, the femur is positioned on the distal end surface, and a drill with the diameter of 8 mm opens a femoral medullary hole so as to facilitate the accurate bone cutting of the intramedullary positioning rod inserted into the distal bone cutting surface of the femur. After the prosthesis test is completed after the osteotomy, the femoral medullary hole needs to be closed before the prosthesis is placed in the prosthesis. The femoral medullary opening hole is closed by medical bone cement, and the common method has the defects that bone defect is caused and the femoral bone mass is not kept when secondary revision is carried out; the other method is to cut off bone blocks left by the bone and automatically cut the bone blocks with different sizes to be plugged into the medullary hole of the femur for sealing, and has the defects that no special tool is provided, the medullary hole is not easy to be quickly and stably sealed, the unstable sealing sometimes enters the medullary cavity of the femur to cause the sealing failure, the repeated hematocele of the knee joint cavity is caused, and even the infection is caused.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a simple structure, be exclusively used in anchor clamps of preparation bone bolt.

In order to solve the technical problem, the technical scheme of the utility model is that: a clamp special for manufacturing bone bolts comprises a circular truncated cone-shaped body with openings at two ends, wherein a piston type extrusion head is arranged at the large head end of the circular truncated cone-shaped body; the small head part of the circular truncated cone-shaped body forms an opening and closing door facilitating the bone bolt to be taken out through a part of small head wall cut by the L-shaped notch; the small head of the body is also provided with a clamping hoop for clamping the opening and closing door and clamping and extruding the small head in the radial direction.

Further: in the above-mentioned special fixture for manufacturing bone bolt, the clamping hoop comprises a hoop body sleeved on the small head of the body and force applying feet arranged at two free ends of the hoop body. The force application feet are connected by a screw with a nut. The piston type extrusion head also comprises a handle. The diameter of the big end of the body is 9-13 mm, and the diameter of the small end of the body is 5-7 mm. The diameter of the big end of the body is 10 millimeters and the diameter of the small end of the body is 6 millimeters, or the diameter of the big end of the body is 12 millimeters and the diameter of the small end of the body is 8 millimeters; the total length of the body is 30 +/-2 millimeters.

Compared with the prior art, in order to stably seal the femoral medullary hole, the utility model develops a clamp special for manufacturing a bone bolt, which comprises a round platform-shaped body with two open ends, wherein the big end of the round platform-shaped body is provided with a piston type extrusion head; the small head part of the circular truncated cone-shaped body is provided with an opening and closing door which is convenient for taking out the bone bolt; the small head of the body is also provided with a clamping hoop for clamping the opening and closing door and clamping and extruding the small head in the radial direction. The clamping hoop comprises a hoop body sleeved with the small end of the body and force application feet arranged at two free ends of the hoop body. Placing the cancellous bone left by the osteotomy into the fixture, and forming the bone bolt by up-down extrusion and transverse extrusion. Because one end of the bone bolt is slightly smaller than the other end by 1.5 mm, the bone bolt can be smoothly inserted into the femoral medullary hole, and the tail end of the bone bolt is hammered by the bone hammer to quickly complete the stable closing of the femoral medullary hole, so that the femoral medullary hole can be quickly and stably closed, and the local bleeding amount is reduced. The utility model discloses an anchor clamps simple structure, convenient to use can swiftly make the bone bolt.

Drawings

FIG. 1 is a schematic front view of a jig dedicated to manufacturing bone bolts according to the present invention;

FIG. 2 is a schematic front view of the clamp body of the present invention;

FIG. 3 is an enlarged schematic view of the clamp of the present invention;

FIG. 4 is a front view of the clamp with a force applied to the clamp;

wherein, 1 body, 2 piston extrusion heads, 3 opening and closing doors, 4 clamp hoops, 5 hoop bodies, 6 force applying feet, 7 screw rods and 8 handles.

Detailed Description

To facilitate understanding for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples.

Referring to FIGS. 1-4: a clamp special for manufacturing bone bolts comprises a circular truncated cone-shaped body 1 with openings at two ends, wherein a piston type extrusion head 2 is arranged at the large head end of the circular truncated cone-shaped body; the small head part of the circular truncated cone-shaped body forms an opening and closing door 3 which is convenient for taking out bone bolts through a part of small head wall cut by the L-shaped notch; the small head of the body is also provided with a clamping hoop 4 for clamping the opening and closing door and clamping and extruding the small head in the radial direction. The clamping hoop comprises a hoop body 5 sleeved with the small head of the body and force application feet 6 arranged at two free ends of the hoop body. The force application feet are connected by a screw 7 with a nut. The piston type squeezing head also comprises a handle 8. The diameter of the big end of the body is 9-13 mm, and the diameter of the small end of the body is 5-7 mm. The diameter of the big end of the body is 10 millimeters and the diameter of the small end of the body is 6 millimeters, or the diameter of the big end of the body is 12 millimeters and the diameter of the small end of the body is 8 millimeters; the total length of the body is 30 +/-2 millimeters.

When the clamp is used for manufacturing the bone bolt, cancellous bone left by the cut bone is placed into the clamp, the force application handle 7 exerts force on the piston type extrusion head 2, the transverse extrusion of the piston type extrusion head 2 pushes the cancellous bone to the small head of the body, the screw cap of the screw rod 7 is rotated, the force application foot 6 is clamped, the cancellous bone in the small head of the body is transversely extruded by the hoop body 5, the free end of the opening and closing door 3 is inwards rolled under the action of the clamping hoop 4, the extrusion force enables the bone bolt to be formed, the force application foot 6 is loosened, the clamping hoop 4 is loosened, the opening and closing door 3 is opened, and the bone bolt is taken out.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a be exclusively used in anchor clamps of preparation bone peg, includes both ends open-ended round platform form body (1), its characterized in that: the big end of the circular truncated cone-shaped body is provided with a piston type extrusion head (2); the small head part of the circular truncated cone-shaped body forms an opening and closing door (3) which is convenient for taking out the bone bolt through a part of small head wall cut by the L-shaped notch; the small head of the body is also provided with a clamping hoop (4) for clamping the opening and closing door and clamping and extruding the small head in the radial direction.

2. The jig special for making bone bolts as claimed in claim 1, wherein: the clamping hoop comprises a hoop body (5) sleeved with the small head of the body and force application feet (6) arranged at two free ends of the hoop body.

3. The jig special for making bone pegs as claimed in claim 2, wherein: the force application feet are connected by a screw rod (7) with a screw cap.

4. The jig special for making bone bolts as claimed in claim 3, wherein: the piston type squeezing head also comprises a handle (8).

5. The jig special for making bone bolts as claimed in claim 4, wherein: the diameter of the big end of the body is 9-13 mm, and the diameter of the small end of the body is 5-7 mm.

6. The jig special for making bone bolts as claimed in claim 4, wherein: the diameter of the big end of the body is 10 millimeters and the diameter of the small end of the body is 6 millimeters, or the diameter of the big end of the body is 12 millimeters and the diameter of the small end of the body is 8 millimeters; the total length of the body is 30 +/-2 millimeters.