A new type of nail holder

Abstract

The present invention relates to the technical field of medical devices, and discloses a novel nail holder, comprising a pliers body, a sliding handle and a spring, wherein the pliers body comprises a first gripping part, a connecting part, a second gripping part and a positioning part for stabilizing a pin, wherein the first gripping part, the connecting part and the second gripping part are connected end to end in sequence, and the positioning part is located above the connecting part, and the positioning part comprises a left positioning body and a right positioning body, wherein the left positioning body and the right positioning body are located between the first gripping part and the second gripping part, wherein the left positioning body is formed on one side of the lower end of the first gripping part, and the right positioning body is formed on one side of the lower end of the second gripping part, and the left positioning body is located above the right positioning body; the novel nail holder provided by the present invention solves the problem of high equipment cost in the existing method of driving in and pulling out pins, which requires the use of a nail holder and a nail puller respectively.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a novel nail holder. Background Art

[0002] In recent years, artificial knee prosthesis replacement has developed rapidly and matured, and more and more patients are choosing artificial knee prosthesis replacement. In knee replacement surgery, pins are often used to fix the instruments, and in this process, instruments are needed to drive in and out the pins.

[0003] In the prior art, a nail holder is used to hold the pin, and then a hammer is used to drive the pin in, and then a nail puller is used to pull the pin out, and the above two steps achieve the fixing effect of the pin. The nail holder and the nail puller are separate instruments, which increases the instrument cost. Summary of the invention

[0004] The object of the present invention is to provide a novel nail holder to solve at least one of the above problems existing in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A new type of nail holder, comprising a pliers body, a sliding handle and a spring, wherein the pliers body comprises a first gripping portion, a connecting portion, a second gripping portion and a positioning portion for stabilizing a pin, wherein the first gripping portion, the connecting portion and the second gripping portion are connected end to end in sequence, wherein the positioning portion is located above the connecting portion, wherein the positioning portion comprises a left positioning body and a right positioning body, wherein the left positioning body and the right positioning body are located between the first gripping portion and the second gripping portion, wherein the left positioning body is formed on one side of the lower end of the first gripping portion, wherein the right positioning body is formed on one side of the lower end of the second gripping portion, wherein the left positioning body is located above the right positioning body, wherein the left positioning body and the right positioning body extend towards each other, wherein the left positioning body, the right positioning body and the connecting portion are all provided with a connecting hole for facilitating the pin to pass through;

[0007] The second gripping portion is provided with a clamping protrusion extending in the axial direction of the connecting hole, the end of the clamping protrusion has an arc groove matching the outer shape of the pin, the clamping protrusion is located above the left positioning body, and there is an elastic gap between the clamping protrusion, the left positioning body, the right positioning body and the connecting portion;

[0008] The first gripping portion includes a connecting column, a spring is sleeved on the connecting column, a sliding handle is slidably connected to the connecting column, the sliding handle is located above the spring, and the lower end of the sliding handle has an abutment portion extending toward the axial direction of the connecting hole, and the abutment portion abuts against the tail of the pin.

[0009] This new type of nail holder can simultaneously meet the operation of driving in and pulling out the pin, and realize the functions of holding and pulling out the pin. Specifically, the process of holding and driving in the pin: first, install the pin into the corresponding connecting hole, and the positioning part can be used to stabilize the pin in a vertical state, then hold the first grip and the second grip of the pliers body tightly, fix the pin, and press the head of the pin against the bone, and knock the tail of the sliding handle. The sliding handle can slide on the connecting column. Since the lower end of the sliding handle has an abutment portion extending toward the axial direction of the connecting hole, the abutment portion abuts against the tail of the pin, thereby driving the pin to be driven into the bone. The process of pulling out the pin: first, install the pin into the corresponding connecting hole, hold the first grip and the second grip tightly, so that the clamping protrusion at the front end of the pliers head moves inward to press against the pin, so as to clamp the pin, and then the pin can be pulled out through the nail holder. In addition, this new nail holder has added a spring protection structure, which can act as a buffer when the pin is driven in, thereby preventing the pin from being deflected due to excessive driving or uneven force.

[0010] This new nail holder has two functions in one instrument, which saves production costs, can complete knee joint surgery conveniently and quickly, and can completely replace the nail holder and nail puller in the existing knee joint instruments. At the same time, it can also prevent the pin from being driven too deep and causing trauma to the patient's bones.

[0011] Furthermore, in order to make the positioning portion of the pliers body have a better limiting effect, avoid the left positioning body and the right positioning body from being separated by too much distance under the action of external force, and ensure the matching gap between the two, the end of the left positioning body has an extension body extending downward, and a groove is provided on the right positioning body at a position corresponding to the extension body, and the extension body is located in the groove.

[0012] Furthermore, in order to ensure the structural strength of the pliers body, the pliers body is an integrally formed structure.

[0013] Furthermore, in order to make the left positioning body and the right positioning body have a better positioning effect on the pin, the lower end of the left positioning body has an upper slope extending obliquely upward, and the upper end of the right positioning body has a lower slope with the same inclination direction as the upper slope.

[0014] Furthermore, in order to facilitate the application of force to the sliding handle, the sliding handle includes a sliding portion and an arc-shaped extension portion, the sliding portion slidingly cooperates with the connecting column, the abutment portion is formed at the lower end of the sliding portion, the arc-shaped extension portion bends outward in an arc shape and extends upward, and a striking plate is provided at the upper end of the arc-shaped extension portion.

[0015] Furthermore, in order to ensure the structural strength of the sliding handle, the sliding handle is an integrally formed structure.

[0016] Furthermore, in order to enable the clamping protrusion to move better inward when holding the pliers body so that the clamping protrusion has a better clamping effect, the upper end of the left positioning body has an upper end inclined surface extending downwardly, and the lower end of the clamping protrusion has a lower end inclined surface with the same inclination direction as the upper end inclined surface.

[0017] Furthermore, in order to prevent the first gripping portion from interfering with the sliding handle in the gripping state, the first gripping portion is vertically arranged, and the second gripping portion is bent outwardly in an arc shape and extends upward.

[0018] The beneficial effects of the present invention are as follows: the new type of nail holder can simultaneously meet the operation of driving in and pulling out the pin, and realize the functions of holding and pulling out the pin. Specifically, the process of holding and driving in the pin: first, install the pin into the corresponding connecting hole, the positioning part can be used to stabilize the pin in a vertical state, then hold the first gripping part and the second gripping part of the pliers body tightly, fix the pin, press the pin head against the bone, and knock the tail of the sliding handle. The sliding handle can slide on the connecting column. Since the lower end of the sliding handle has an abutting part extending toward the axial direction of the connecting hole, the abutting part abuts against the tail of the pin, thereby driving the pin to be driven into the bone. The process of pulling out the pin: first, install the pin into the corresponding connecting hole, hold the first gripping part and the second gripping part tightly, so that the clamping protrusion at the front end of the pliers head moves inward to press against the pin, so as to clamp the pin, and then the pin can be pulled out through the nail holder. In addition, this new nail holder has added a spring protection structure, which can act as a buffer when the pin is driven in, thereby preventing the pin from being deflected due to excessive driving or uneven force.

[0019] This new nail holder has two functions in one instrument, which saves production costs, can complete knee joint surgery conveniently and quickly, and can completely replace the nail holder and nail puller in the existing knee joint instruments. At the same time, it can also prevent the pin from being driven too deep and causing trauma to the patient's bones. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the first viewing angle of the present invention;

[0021] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the present invention in use;

[0023] Figure 4 It is a cross-sectional structural schematic diagram of the present invention in use state.

[0024] In the figure: pliers body 1; sliding handle 2; sliding part 2.1; arc-shaped extension part 2.2; striking plate 2.3; spring 3; first gripping part 4; connecting part 5; second gripping part 6; left positioning body 7; right positioning body 8; connecting hole 9; pin 10; clamping protrusion 11; arc-shaped groove 12; elastic gap 13; connecting column 14; abutment part 15; extension body 16; groove 17; upper inclined surface 18; lower inclined surface 19; upper end inclined surface 20; lower end inclined surface 21. DETAILED DESCRIPTION

[0025] Embodiment 1:

[0026] like Figure 1-Figure 4 As shown, this embodiment provides a new type of nail holder, including a pliers body 1, a sliding handle 2 and a spring 3, the pliers body 1 includes a first gripping portion 4, a connecting portion 5, a second gripping portion 6 and a positioning portion for stabilizing a pin 10, the first gripping portion 4, the connecting portion 5 and the second gripping portion 6 are connected end to end in sequence, the positioning portion is located above the connecting portion 5, the positioning portion includes a left positioning body 7 and a right positioning body 8, the left positioning body 7 and the right positioning body 8 are located between the first gripping portion 4 and the second gripping portion 6, the left positioning body 7 is formed on one side of the lower end of the first gripping portion 4, the right positioning body 8 is formed on one side of the lower end of the second gripping portion 6, the left positioning body 7 is located above the right positioning body 8, the left positioning body 7 and the right positioning body 8 extend toward each other, and the left positioning body 7, the right positioning body 8 and the connecting portion 5 are all provided with a connecting hole 9 for the pin 10 to pass through;

[0027] The second gripping portion 6 is provided with a clamping protrusion 11 extending in the axial direction of the connecting hole 9, and the end of the clamping protrusion 11 has an arc groove 12 matching the external shape of the pin 10, and the clamping protrusion 11 is located above the left positioning body 7, and there is an elastic gap 13 between the clamping protrusion 11, the left positioning body 7, the right positioning body 8 and the connecting portion 5;

[0028] The first gripping portion 4 includes a connecting column 14, on which a spring 3 is sleeved, and a sliding handle 2 is slidably connected to the connecting column 14. The sliding handle 2 is located above the spring 3, and the lower end of the sliding handle 2 has an abutment portion 15 extending toward the axial direction of the connecting hole 9, and the abutment portion 15 abuts against the tail of the pin 10.

[0029] This new type of nail holder can simultaneously meet the operation of driving in and out the pin 10, and realize the functions of holding and pulling out the pin. Specifically, the process of holding and driving in the pin is as follows: first, the pin 10 is installed in the corresponding connecting hole 9, and the positioning part can be used to stabilize the pin 10 in a vertical state, then the first gripping part 4 and the second gripping part 6 of the pliers body 1 are gripped to fix the pin 10, and the head of the pin 10 is pressed against the bone, and the tail of the sliding handle 2 is knocked, and the sliding handle 2 can slide on the connecting column 14. Since the lower end of the sliding handle 2 has an abutting part 15 extending toward the axial direction of the connecting hole 9, the abutting part 15 abuts against the tail of the pin 10, thereby driving the pin 10 into the bone. Nail extraction process: first, insert the pin 10 into the corresponding connecting hole 9, hold the first gripping part 4 and the second gripping part 6 tightly, so that the clamping protrusion 11 at the front end of the head of the pliers body 1 moves inward to press against the pin 10, thereby clamping the pin 10, and then the pin 10 can be pulled out by the nail holder. In addition, since the first gripping part 4 includes a connecting column 14, a spring 3 is sleeved on the connecting column 14, and a spring protection structure is added, it can play a buffering role when the pin 10 is driven in, thereby preventing the pin 10 from being deflected due to excessive driving or uneven force.

[0030] The novel nail holder has two functions in one instrument, which saves production cost, can complete knee joint surgery conveniently and quickly, and can completely replace the nail holder and nail puller in the existing knee joint instruments. At the same time, it can also prevent the pin 10 from being driven too deep and causing trauma to the patient's bones.

[0031] Embodiment 2:

[0032] This embodiment is optimized based on the above-mentioned embodiment 1.

[0033] In order to make the positioning part of the pliers body 1 have a better limiting effect, avoid the left positioning body 7 and the right positioning body 8 from being separated by too much distance under the action of external force, and ensure the matching gap between the two, the end of the left positioning body 7 has an extension body 16 extending downward, and a groove 17 is provided on the right positioning body 8 at a position corresponding to the extension body 16, and the extension body 16 is located in the groove 17.

[0034] Embodiment 3:

[0035] This embodiment is optimized based on the above-mentioned embodiment 1.

[0036] In order to ensure the structural strength of the pliers body 1 , the pliers body 1 is an integrally formed structure.

[0037] Embodiment 4:

[0038] This embodiment is optimized based on the above-mentioned embodiment 1.

[0039] In order to make the left positioning body 7 and the right positioning body 8 have a better positioning effect on the pin 10, the lower end of the left positioning body 7 has an upper inclined surface 18 extending obliquely upward, and the upper end of the right positioning body 8 has a lower inclined surface 19 with the same inclination direction as the upper inclined surface 18.

[0040] Embodiment 5:

[0041] This embodiment is optimized based on the above-mentioned embodiment 1.

[0042] In order to facilitate the application of force to the sliding handle 2, the sliding handle 2 includes a sliding portion 2.1 and an arc-shaped extension portion 2.2. The sliding portion 2.1 is slidably matched with the connecting column 14, and the abutment portion 15 is formed at the lower end of the sliding portion 2.1. The arc-shaped extension portion 2.2 is bent outward in an arc shape and extends upward, and a striking plate 2.3 is provided at the upper end of the arc-shaped extension portion 2.2.

[0043] Embodiment 6:

[0044] This embodiment is optimized based on the above-mentioned embodiment 5.

[0045] In order to ensure the structural strength of the sliding handle 2, the sliding handle 2 is an integrally formed structure.

[0046] Embodiment 7:

[0047] This embodiment is optimized based on the above-mentioned embodiment 1.

[0048] In order to enable the clamping protrusion 11 to move inward better when holding the pliers body 1 so that the clamping protrusion 11 has a better clamping effect, the upper end of the left positioning body 7 has an upper end slope 20 extending obliquely downward, and the lower end of the clamping protrusion 11 has a lower end slope 21 with the same inclination direction as the upper end slope 20.

[0049] Embodiment 8:

[0050] This embodiment is optimized based on the above-mentioned embodiment 1.

[0051] In order to prevent the first gripping portion 4 from interfering with the sliding handle 2 in the gripping state, the first gripping portion 4 is vertically arranged, and the second gripping portion 6 is bent outwardly into an arc shape and extends upward.

[0052] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new type of nail holder, characterized in that: The clamp comprises a pliers body, a sliding handle and a spring, wherein the pliers body comprises a first gripping portion, a connecting portion, a second gripping portion and a positioning portion for stabilizing a pin, wherein the first gripping portion, the connecting portion and the second gripping portion are connected end to end in sequence, wherein the positioning portion is located above the connecting portion, wherein the positioning portion comprises a left positioning body and a right positioning body, wherein the left positioning body and the right positioning body are located between the first gripping portion and the second gripping portion, wherein the left positioning body is formed on one side of the lower end of the first gripping portion, wherein the right positioning body is formed on one side of the lower end of the second gripping portion, wherein the left positioning body is located above the right positioning body, wherein the left positioning body and the right positioning body extend towards each other, wherein the left positioning body, the right positioning body and the connecting portion are all provided with a connecting hole for facilitating the pin to pass through; The second gripping portion is provided with a clamping protrusion extending in the axial direction of the connecting hole, the end of the clamping protrusion has an arc groove matching the outer shape of the pin, the clamping protrusion is located above the left positioning body, and there is an elastic gap between the clamping protrusion, the left positioning body, the right positioning body and the connecting portion; The first gripping portion includes a connecting column, a spring is sleeved on the connecting column, a sliding handle is slidably connected to the connecting column, the sliding handle is located above the spring, and the lower end of the sliding handle has an abutment portion extending toward the axial direction of the connecting hole, and the abutment portion abuts against the tail of the pin; An extension body extending downward is provided at the end of the left positioning body, and a groove is provided at a position corresponding to the extension body on the right positioning body, and the extension body is located in the groove.

2. A new type nail holder according to claim 1, characterized in that: The clamp body is an integrally formed structure.

3. A new type nail holder according to claim 1, characterized in that: The lower end of the left positioning body has an upper slope extending obliquely upward, and the upper end of the right positioning body has a lower slope in the same inclination direction as the upper slope.

4. A new type nail holder according to claim 1, characterized in that: The sliding handle includes a sliding portion and an arc-shaped extension portion, the sliding portion is slidably matched with the connecting column, the abutment portion is formed at the lower end of the sliding portion, the arc-shaped extension portion is bent outward in an arc shape and extends upward, and a striking plate is provided at the upper end of the arc-shaped extension portion.

5. A new type nail holder according to claim 4, characterized in that: The sliding handle is an integrally formed structure.

6. A new type nail holder according to claim 1, characterized in that: The upper end of the left positioning body has an upper end inclined surface extending obliquely downward, and the lower end of the clamping protrusion has a lower end inclined surface with the same inclination direction as the upper end inclined surface.

7. A new type nail holder according to claim 1, characterized in that: The first gripping portion is vertically arranged, and the second gripping portion is bent outwardly in an arc shape and extends upward.

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