CN211460487U

CN211460487U - Intramedullary nail handle driver

Info

Publication number: CN211460487U
Application number: CN201921795980.3U
Authority: CN
Inventors: 王俊超; 缪荣芹; 郑光亮
Original assignee: Trauson Medical Instrument China Co Ltd
Current assignee: Trauson Medical Instrument China Co Ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-09-11
Anticipated expiration: 2029-10-24

Abstract

The utility model relates to the technical field of medical equipment, especially, relate to an intramedullary nail handle impactor, including handle, impactor body and intermediate junction spare, the intermediate junction spare joint is on the handle, impactor body and intermediate junction spare threaded connection, and the front end of impactor body can pass the intermediate junction spare and arrange the spacing downthehole on the handle in. The utility model discloses an intramedullary nail handle impactor, through increased the intermediate junction spare between handle and impactor body, the front end threaded connection of intermediate junction spare and impactor body, even if the impactor body splits at the strike in-process like this, also only need change the intermediate junction spare can, need not to change the handle, the impactor of different models in addition only need change the intermediate junction spare can, need not to change the size of handle, the suitability is more extensive, practices thrift the cost.

Description

Intramedullary nail handle driver

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an intramedullary nail handle driver.

Background

For example, in the patent application of an intramedullary nail driver stabilizing device with publication number CN109907813A, as shown in fig. 1 of CN109907813A document, the driver is in threaded connection with the handle, during the striking process of the handle, the joint of the driver and the handle is easily broken, and part of the broken driver is trapped in the handle and cannot be taken out, so that the handle cannot be reused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the technical problem that the impactor is easy to break in the prior art, the utility model provides an intramedullary nail handle impactor.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an intramedullary nail handle impactor, includes handle, impactor body and intermediate junction spare, the intermediate junction spare joint is on the handle, and impactor body and intermediate junction spare threaded connection, and the front end of impactor body can pass the intermediate junction spare and place spacing downthehole on the handle in. The utility model discloses an intramedullary nail handle driver, through increased the intermediate junction spare between handle and driver body, the front end threaded connection of intermediate junction spare and driver body, even if the driver body splits at the striking in-process like this, also only need change the intermediate junction spare can, need not to change the handle, the driver of different models in addition only need change the intermediate junction spare can, need not to change the size of handle.

Furthermore, in order to limit the movement of the intermediate connecting piece on the handle, the limiting hole is a thread-free stepped hole formed from the upper surface to the lower surface of the handle, and the inner diameter of the upper part of the stepped hole is larger than that of the lower part of the stepped hole.

Further, specifically, the intermediate junction spare has the recess, and the intermediate junction spare passes through the recess from the side joint of handle to the handle on, and one side of intermediate junction spare and handle up end contact is last side, go up and seted up the internal thread hole on the side, internal thread hole and the coaxial setting of shoulder hole, the tip and the internal thread hole threaded connection of impactor body, and the tip of impactor body can stretch into the shoulder hole.

Further, specifically, the uppermost round of stepped surface in the stepped hole is a first stepped surface, the inner diameter of the part above the first stepped surface in the stepped hole is D1, the outer diameter of the end of the driver body is matched with D1 or larger than D1, and the end of the driver body can abut against the first stepped surface.

Further, for the convenience of the joint of middle connecting piece is connected, shell fragment deformation passageway has been seted up to the position that is close to the lower surface of last lateral part and is close to the notch of recess, the length direction of shell fragment deformation passageway sets up along recess length direction, shell fragment deformation passageway bottom one side and the lower surface parallel and level of last lateral part and structure as an organic whole, the another side on one side of shell fragment deformation passageway bottom is the free end and is close to the notch of recess, the another side of elasticity house piece still is provided with convex cambered surface portion down, in the middle of connecting piece and handle joint in-process, the deformation of rebound can take place for the cambered surface portion of elasticity house piece, in the middle of, after middle connecting piece and handle joint are accomplished, the cambered surface portion supports.

Further, specifically, the top of driver body is provided with the hammer and holds in the palm, and the tip of driver body is the threaded rod, and threaded rod and hammer hold in the palm between through the connecting rod connection, threaded rod and internal thread hole threaded connection, and the tip of threaded rod can stretch into in the shoulder hole, support and lean on to first step face.

The beneficial effects of the utility model are that, the utility model discloses an intramedullary nail handle impactor, through increased the intermediate junction spare between handle and impactor body, the front end threaded connection of intermediate junction spare and impactor body, even the impactor body splits at the knocking in-process like this, also only need change the intermediate junction spare can, need not to change the handle, the impactor of different models in addition only need change the intermediate junction spare can, need not to change the size of handle.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the three-dimensional structure of the intramedullary nail handle driver of the present invention.

Fig. 2 is a schematic view of the handle three-dimensional structure of the intramedullary nail handle driver of the present invention.

Fig. 3 is a schematic view of the handle structure of the intramedullary nail handle driver of the present invention.

Fig. 4 is a schematic view of the three-dimensional structure of the middle connector of the intramedullary nail handle driver of the present invention.

Fig. 5 is a schematic view of the three-dimensional structure of the driver body of the intramedullary nail handle driver of the present invention.

In the figure: 1. the handle, 11, the shoulder hole, 12, the first shoulder surface, 2, the driver body, 21, the hammer holder, 22, the connecting rod, 23, the threaded rod, 3, the middle connecting piece, 31, the groove, 32, the upper side part, 33, the internal threaded hole, 34, the elastic piece deformation channel, 35, the cambered surface part, 36 and the elastic piece.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1-5, which is the best embodiment of the present invention, an intramedullary nail handle driver comprises a handle 1, a driver body 2 and an intermediate connector 3, wherein the intermediate connector 3 is connected to the handle 1 in a clamping manner, the driver body 2 is connected to the intermediate connector 3 in a threaded manner, and the front end of the driver body 2 can pass through the intermediate connector 3 and be placed in a limiting hole on the handle 1.

The limiting hole is a step hole 11 (unthreaded hole) without threads formed in the handle 1 from the upper surface to the lower surface, the inner diameter of the upper portion of the step hole 11 is larger than that of the lower portion, and at least one circle of step surface is arranged in the step hole 11.

Middle connecting piece 3 has recess 31, and middle connecting piece 3 is passed through recess 31 from the side joint of handle 1 to handle 1 on, and one side of middle connecting piece 3 and the contact of handle 1 up end is last side 32, internal thread hole 33 has been seted up on going up side 32, and internal thread hole 33 and shoulder hole 11 are coaxial to be set up, the tip and the internal thread hole 33 threaded connection of impactor body 2, and the tip of impactor body 2 can stretch into in the shoulder hole 11.

The uppermost circle of step surface in the stepped hole 11 is the first step surface 12, the inner diameter of the part above the first step surface 12 in the stepped hole 11 is D1, the outer diameter of the end part of the driver body 2 is matched with D1, and the end part of the driver body 2 can be abutted against the first step surface 12.

Be close to the lower surface of last lateral part 32 and the position of being close to the notch of recess 31 has seted up shell fragment deformation passageway 34, shell fragment deformation passageway 34's length direction sets up along recess 31 length direction, shell fragment deformation passageway 34 bottom is on one side with the lower surface parallel and level of last lateral part 32 and structure as an organic whole, shell fragment deformation passageway 34 bottom on one side the another side be the free end and be close to the notch of recess 31, the another side of elasticity house piece 36 still is provided with convex cambered surface portion 35 downwards, in the middle of connecting piece 3 and the 1 joint in-process of handle, the deformation of upwards removing can take place for the cambered surface portion 35 of elasticity house piece 36, in the middle of connecting piece 3 and the completion of handle 1 joint back, cambered surface portion 35 supports and keeps off on the.

The top of the driver body 2 is provided with a hammer support 21, the end of the driver body 2 is a threaded rod 23, the threaded rod 23 is connected with the hammer support 21 through a connecting rod 22, the threaded rod 23 is in threaded connection with an internal threaded hole 33, and the end of the threaded rod 23 can extend into the stepped hole 11 and abut against the first stepped surface 12.

During the use, go into the notch of the recess 31 of intermediate junction spare 3 with one side card of handle 1, go into the deformation that upwards removes can take place for the cambered surface portion 35 of in-process elasticity shed piece 36, after intermediate junction spare 3 and the completion of handle 1 joint, cambered surface portion 35 supports and blocks on handle 1's another side (lateral surface), adjust intermediate junction spare 3 front and back position on handle 1 again, make the internal thread hole 33 of intermediate junction spare 3 aim at shoulder hole 11, the threaded rod 23 and the internal thread hole 33 threaded connection of 2 tip of driver body, and rotatory driver body 2 stretches into shoulder hole 11 with the front end of threaded rod 23 in, support to first shoulder surface 12 on, alright hammer the support 21 at driver body 2 top with the hammer this moment. The utility model discloses an intramedullary nail handle driver, through increased intermediate junction spare 3 between handle 1 and driver body 2, the front end threaded connection of intermediate junction spare 3 and driver body 2, even driver body 2 splits at the striking in-process like this, also only need change intermediate junction spare 3 can, need not to change handle 1, the screw rod size of the driver front end of different models is different in addition, also only need to change the intermediate junction spare 3 of matching can, need not to change the size of handle 1, the suitability is more extensive, and the cost is saved.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An intramedullary nail handle driver, characterized in that: including handle (1), impactor body (2) and intermediate junction spare (3), intermediate junction spare (3) joint is on handle (1), and impactor body (2) and intermediate junction spare (3) threaded connection, and the front end of impactor body (2) can pass intermediate junction spare (3) and place spacing downthehole on handle (1) in.

2. The intramedullary nail handle driver of claim 1, wherein: the limiting hole is a thread-free stepped hole (11) formed in the handle (1) from the upper surface to the lower surface, and the inner diameter of the upper portion of the stepped hole (11) is larger than that of the lower portion of the stepped hole.

3. The intramedullary nail handle driver of claim 2, wherein: middle connecting piece (3) have recess (31), and middle connecting piece (3) are gone up from the side joint of handle (1) through recess (31) on handle (1), and one side of middle connecting piece (3) and handle (1) up end contact is last lateral part (32), go up and seted up internal thread hole (33) on lateral part (32), internal thread hole (33) and shoulder hole (11) coaxial setting, the tip and internal thread hole (33) threaded connection of impactor body (2), and the tip of impactor body (2) can stretch into shoulder hole (11).

4. The intramedullary nail handle driver of claim 2, wherein: the top circle of step face is first step face (12) in shoulder hole (11), and the internal diameter of the part more than first step face (12) is D1 in shoulder hole (11), and the tip external diameter and the D1 of impactor body (2) cooperate, and the tip of impactor body (2) can support and lean on to first step face (12).

5. The intramedullary nail handle driver of claim 3, wherein: be close to the lower surface of last lateral part (32) and the position that is close to the notch of recess (31) have seted up shell fragment deformation passageway (34), the length direction of shell fragment deformation passageway (34) sets up along recess (31) length direction, shell fragment deformation passageway (34) bottom one side and the lower surface parallel and level of last lateral part (32) and structure as an organic whole, the another side on one side of shell fragment deformation passageway (34) bottom is the free end and is close to the notch of recess (31), the another side of elasticity house piece (36) still is provided with convex cambered surface portion (35) down, in the middle of connecting piece (3) and handle (1) joint in-process, the deformation of upwards moving can take place in cambered surface portion (35) of elasticity house piece (36), after middle of connecting piece (3) and handle (1) joint are accomplished, cambered surface portion (35) support and block on the lateral surface of handle (1).

6. The intramedullary nail handle driver of claim 3, wherein: the top of driver body (2) is provided with hammer holder (21), and the tip of driver body (2) is threaded rod (23), and threaded rod (23) and hammer holder (21) are connected through connecting rod (22) between, threaded rod (23) and internal thread hole (33) threaded connection, and the tip of threaded rod (23) can stretch into shoulder hole (11), support and lean on to first step face (12) on.