CN219331871U - Inspection nail imbedding device and operation navigation system - Google Patents

Abstract

The present application provides an inspection pin inserter and a surgical navigation system including an inspection pin and an inspection pin inserter for inserting an inspection pin into bone. The inspection pin implanter includes: the mandrel is provided with a front end and a rear end which are oppositely arranged; the clamping piece comprises a mounting part and at least two clamping parts, the mounting part is sleeved outside the mandrel, each clamping part is circumferentially arranged outside the mandrel at intervals, and the connecting end of each clamping part is connected with the mounting part; the sliding sleeve is sleeved outside the mounting part and each clamping part in a sliding manner; each clamping part has a gathering state and a separating state under the sliding drive of the sliding sleeve; when the clamping parts are in a gathering state, the free ends of the clamping parts extend to the front side of the front end of the mandrel, and the checking nails are clamped by the free ends and the front end of the mandrel; when the clamping parts are in a separated state, the clamping parts are separated from each other under the action of self elasticity, and the inspection nails are loosened. The utility model discloses a can be with inspection nail firmly lean on the location for inspection nail is accurate implantation fast.

Description

Inspection nail imbedding device and operation navigation system

Technical Field

The application belongs to the technical field of medical instruments, and in particular relates to an inspection nail imbedding device and an operation navigation system.

Background

In bone surgery, to determine the accuracy of registration of the position of a patient's affected limb, it is necessary to place an inspection pin into the bone of the surgical site and then track the position of the inspection pin by a tracker. The length of the inspection nail is short, the volume is small, the inspection nail is difficult to be directly placed by hand, the placement of the inspection nail is rapidly completed in the operation process, the operation time can be shortened, the operation is facilitated to be carried out smoothly, and therefore, the inspection nail needs to be placed into bones through the inspection nail placement device.

The inspection pin implanter generally includes a sleeve, a central shaft, a sleeve, a handle sleeve, a spring, and a pin. The sliding sleeve is sleeved outside the middle shaft, the side edge of the sliding sleeve is slotted, and the pin penetrates through the side edge slot of the sliding sleeve and the pin hole of the middle shaft to fix and enable the sliding sleeve to axially slide along the middle shaft. The spring is connected between the sliding sleeve and the middle shaft, and the spring enables the sliding sleeve to reset automatically. The handle sleeve is sleeved on the middle shaft, and the handle sleeve is fixed with the middle shaft through threads. The side of the center shaft is provided with a slotted hole, and inspection nails can be put in the slotted hole. When in use, the sliding sleeve is pulled up firstly, the inspection nails are put in from the side grooves of the central shaft, and then the sliding sleeve is put out. The sliding sleeve resets under the pushing of the spring, and the side groove is blocked to prevent the checking nail from falling off. Because the inspection pins are not firmly positioned circumferentially in the central shaft, sliding and positional offset may occur when the inspection pins are implanted.

Disclosure of Invention

An object of the embodiment of the application is to provide an inspection nail implanter, so as to solve the technical problem that in the prior art, the inspection nail implanter is not firm in positioning the inspection nail, so that the inspection nail is likely to slide and shift.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: there is provided an inspection pin inserter for inserting an inspection pin into a bone, the inspection pin inserter comprising:

the mandrel is provided with a front end and a rear end which are oppositely arranged;

the clamping piece comprises a mounting part and at least two clamping parts, the mounting part is sleeved outside the mandrel, the clamping parts are circumferentially arranged outside the mandrel at intervals, the clamping parts are provided with connecting ends and free ends which are oppositely arranged, and the connecting ends are connected with the mounting part;

the sliding sleeve is sleeved outside the mounting part and each clamping part in a sliding manner;

each clamping part has a gathering state and a separation state under the sliding drive of the sliding sleeve; when the clamping parts are in a gathering state, the free ends extend to the front side of the front end of the mandrel, and the free ends and the front end of the mandrel jointly clamp the inspection nails; when the clamping parts are in a separated state, the clamping parts are separated from each other under the action of self elasticity, and the inspection nails are loosened.

In one possible design, the inner side of the free end has a first clamping surface and a second clamping surface, the first clamping surface is a cylindrical surface and is used for clamping the inspection pin in a radial fit manner, and the second clamping surface is a conical surface and is used for clamping the inspection pin in a radial fit manner and in a direction towards the front end of the mandrel.

In one possible design, the front end center of the mandrel extends in a direction away from the mandrel with a locating post for a concave-convex fit with a groove of the inspection pin head.

In one possible design, the outer side wall of the free end is formed with an abutment surface extending in a direction away from the mounting portion and away from the spindle, the abutment surface being for abutment with an inner wall of the sliding sleeve.

In one possible design, the inspection pin applicator further includes a connecting pin extending radially through the mounting portion and the mandrel, respectively, to mount the mounting portion to the mandrel.

In one possible design, the mounting portion is sleeved with a sleeve, and the connecting pin is shielded in the sleeve.

In one possible design, the inspection pin injector further comprises an elastic member, wherein the elastic member is abutted between the sliding sleeve and the shaft sleeve, and the elastic member is used for keeping the sliding sleeve to drive each clamping part to be in a gathering state.

In one possible design, a first limiting block is formed on the inner wall of the sliding sleeve, a second limiting block is formed on the outer wall of the mounting portion, one side of the first limiting block is stopped at the second limiting block, and the elastic piece is abutted between the other side of the first limiting block and the shaft sleeve.

In one possible design, the mandrel comprises a first section and a second section which are connected with each other, and the clamping piece and the sliding sleeve are sleeved on the first section in sequence; the inspection nail imbedding device further comprises a handle sleeve, and the handle sleeve is fixedly sleeved on the second section.

The beneficial effect that this application provided inspection nail implantation ware lies in: the embodiment of the application provides an inspection nail implantation device, through with dabber, holder and sliding sleeve from inside to outside external member in proper order, each clamping part that the sliding sleeve can drive the holder when the holder slides outward gathers together with the centre gripping inspection nail to the dabber, and the drive power of sliding sleeve disappears after, each clamping part separates with loosening the centre gripping nail under self elastic force effect each other. The front end of the mandrel and the free end of the clamping part jointly form axial limit to the clamping nail, and in addition, each clamping part clamps the checking nail by the outer circumferential center, so that the checking nail is circumferentially limited and radially limited, and can be accurately positioned in the checking nail imbedding device, and further, when the checking nail is implanted, the position of the checking nail is fixed, sliding or position deviation cannot occur, the quick and accurate implantation of the checking nail is facilitated, and the smooth operation is facilitated.

In another aspect, the present application also provides a surgical navigation system comprising an inspection pin and the inspection pin inserter described above for inserting the inspection pin into bone.

The surgical navigation system provided by the application has the beneficial effects that: according to the surgical navigation system provided by the embodiment of the application, through the arrangement of the checking nail imbedding device, the checking nail can be quickly and accurately implanted into bones, so that a surgery can be smoothly carried out.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a surgical navigation system according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of a surgical navigation system provided in an embodiment of the present application;

FIG. 3 is an enlarged schematic view of a portion of FIG. 2A;

FIG. 4 is a schematic perspective view of an inspection pin applicator provided in an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of an inspection pin applicator provided in an embodiment of the present application;

FIG. 6 is an exploded schematic view of an inspection pin applicator provided in an embodiment of the present application;

FIG. 7 is a schematic view of the clamping member of FIG. 6;

fig. 8 is a schematic view of the mandrel of fig. 6.

Wherein, each reference sign in the figure:

1. checking a nail imbedding device; 11. a mandrel; 111. a first section; 112. a second section; 113. an input unit; 114. a front end; 115. a rear end; 116. positioning columns; 117. a first mounting hole; 118. a first step; 12. a clamping member; 121. a mounting part; 1211. a second mounting hole; 122. a clamping part; 1221. a connection end; 1222. a free end; 1223. a first clamping surface; 1224. a second clamping surface; 1225. an abutment surface; 123. a second limiting block; 13. a sliding sleeve; 131. a first limiting block; 132. a drive ring; 14. a connecting pin; 15. a shaft sleeve; 16. an elastic member; 17. a handle sleeve; 18. a clamping cavity; 2. checking nails; 21. a head; 211. a first mounting surface; 212. a second mounting surface; 213. a groove; 22. an implant.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1, an inspection pin implanter 1 provided in an embodiment of the present application will now be described. The inspection nail imbedding device 1 is used for imbedding the inspection nail 2 into bones of an operation position, so that a tracker can accurately acquire the operation position, and smooth operation is ensured.

Referring to fig. 2 to 6, the inspection nail injector 1 includes a mandrel 11, a clamping member 12 and a sliding sleeve 13. The clamping piece 12 is sleeved outside the mandrel 11, and the sliding sleeve 13 is sleeved outside the mandrel 11 in a sliding manner, namely, the mandrel 11, the clamping piece 12 and the sliding sleeve 13 are sleeved in sequence from inside to outside. The mandrel 11 is of a solid structure, and for convenience of description, opposite ends of the mandrel 11 in the axial extending direction thereof are referred to as a front end 114 and a rear end 115, and the front end 114 is connected to the inspection pin 2 when the inspection pin 2 is implanted into a human body by the inspection pin implanter 1.

The clamping member 12 includes a mounting portion 121 and at least two clamping portions 122, the mounting portion 121 and each clamping portion 122 are distributed along the axial direction of the mandrel 11, the mounting portion 121 is sleeved outside the mandrel 11, and each clamping portion 122 is circumferentially spaced and surrounded outside the mandrel 11. Specifically, one end of the clamping portion 122 is connected to the mounting portion 121, the other end of the clamping portion 122 is freely disposed, and the clamping portion 122 has elasticity under the action of external force. For convenience of description, opposite ends of the clamping portion 122 may be named as a connection end 1221 and a free end 1222, respectively, the connection end 1221 being connected with the mounting portion 121.

The sliding sleeve 13 is slidably sleeved outside the mounting portion 121 and each clamping portion 122. Each of the clamping portions 122 has a gathered state and a separated state under the sliding drive of the slide sleeve 13. When each clamping portion 122 is in the gathered state, the free end 1222 of the clamping portion 122 extends to the front side of the front end 114 of the mandrel 11, and each clamping portion is clamped by the end 1222 together with the front end 114 of the mandrel 11 with the inspection pin 2. When the respective holding portions 122 are in the separated state, they are separated from each other by their own elastic force and the inspection nails 2 are released.

Referring to fig. 5, in the gathered state, the free end 1222 of the clamping portion 122 and the front end 114 of the mandrel 11 enclose a clamping cavity 18 for clamping the head 21 of the inspection nail 2, wherein the front end 114 of the mandrel 11 and the free end 1222 of the clamping portion 122 together form an axial limit for the clamping nail. In addition, each clamping part 122 clamps the inspection nail 2 by the outer circumferential center, so that the inspection nail 2 is circumferentially limited and radially limited, the inspection nail 2 can be accurately positioned in the inspection nail injector 1, and further, when the inspection nail 2 is implanted, the position of the inspection nail 2 is ensured to be fixed, and sliding or position deviation can not occur, thereby being beneficial to rapid and accurate implantation of the inspection nail 2 and further being beneficial to smooth operation.

In one embodiment, referring to fig. 3, the free end 1222 of the clamping portion 122 has a first clamping surface 1223 and a second clamping surface 1224 on the inner side, the first clamping surface 1223 is a cylindrical surface for radially fitting the inspection pin 2, and the second clamping surface 1224 is a conical surface for radially fitting the inspection pin 2 and in a direction toward the front end 114 of the mandrel 11.

Specifically, the first clamping surface 1223 is connected to the second clamping surface 1224, and the second clamping surface 1224 is located on the front side of the first clamping surface 1223. The first clamping surface 1223 is radially attached to the inspection nail 2 to radially limit the inspection nail 2, and in addition, the first clamping surface 1223 has a clamping force on the inspection nail 2, so that interference fit between the first clamping surface 1223 and the inspection nail 2 is achieved, circumferential limit fit on the inspection nail 2 is also achieved, and the inspection nail 2 is prevented from rotating along the circumferential direction. The second clamping surface 1224 engages the inspection pin 2 radially and in a direction towards the front end 114 of the mandrel 11, wherein radial engagement also achieves radial and circumferential spacing, while the first axial force of the second clamping surface 1224 against the inspection pin 2 towards the front end 114 of the mandrel 11 is opposite to the direction of the second axial force of the front end 114 of the mandrel 11 against the inspection pin 2, thereby achieving axial spacing of the inspection pin 2.

In summary, the first clamping surface 1223 and the second clamping surface 1224 of the clamping portion 122 are used to clamp the inspection nail 2, and the front end 114 of the mandrel 11 is matched to limit the inspection nail 2 axially, so that the inspection nail 2 is limited axially, circumferentially and radially, the inspection nail 2 can be accurately and firmly installed in the inspection nail injector 1, and further the rapid and accurate implantation of the inspection nail 2 is realized.

Referring to fig. 3, when in the gathered state, the second clamping surfaces 1224 of the clamping portions 122 are located in the same conical surface, and the inner diameter of the conical surface gradually increases along the direction towards the mandrel 11, so that the inspection nail 2 can have an acting force for clamping towards the mandrel 11, and the axial limit of the inspection nail 2 is realized.

In practical application, the inspection pin 2 includes a head 21 and an implant 22, the head 21 has a first mounting surface 211 and a second mounting surface 212, the first mounting surface 211 is a cylindrical surface, and the second mounting surface 212 is a conical surface. In the clamping process, the first clamping surface 1223 is clamped and attached to the first mounting surface 211, and the second clamping surface 1224 is clamped and attached to the second mounting surface 212, so that the head 21 of the inspection nail 2 can be accurately and firmly positioned, and further, the rapid and accurate implantation of the inspection nail 2 is realized.

In one embodiment, referring to fig. 3 and 8, a positioning post 116 extends from the center of the front end 114 of the mandrel 11 in a direction away from the mandrel 11, and the positioning post 116 is configured to be in concave-convex engagement with a groove 213 of the head 21 of the inspection nail 2. When the inspection nail 2 is installed, firstly, the groove 213 of the head 21 of the inspection nail 2 and the positioning column 116 of the front end 114 of the mandrel 11 form plug-in fit to realize preliminary axial and radial positioning of the inspection nail 2, and then the sliding sleeve 13 slides forwards to drive the clamping parts 122 to gather towards the mandrel 11 to clamp the inspection nail 2, so that firm installation of the inspection nail 2 is realized; when the inspection nail 2 is detached, the sliding sleeve 13 only needs to slide backwards, the clamping parts 122 loosen the inspection nail 2 under the action of self elasticity, and then the mandrel 11, the clamping piece 12 and the sliding sleeve 13 are integrally withdrawn from the inspection nail 2 backwards, so that the inspection nail 2 is separated. The positioning column 116 is arranged at the front end 114 of the mandrel 11, so that the inspection nail 2 is initially centered before the clamping part 122 clamps the inspection nail 2, and meanwhile, the center of the inspection nail 2 is ensured to be always precisely positioned in the process of clamping the inspection nail 2 by the clamping part 122, so that the inspection nail 2 can be conveniently and rapidly implanted accurately.

In one embodiment, referring to fig. 3 and 7, an outer sidewall of the free end 1222 is formed with an abutment surface 1225, the abutment surface 1225 extends away from the mounting portion 121 and away from the mandrel 11, and the abutment surface 1225 is configured to abut against an inner wall of the sliding sleeve 13. In this embodiment, when each clamping portion 122 is in a loose state, the connecting end 1221 is tilted towards the free end 1222 gradually, the sliding sleeve 13 is sleeved outside the clamping member 12, the inner wall of the sliding sleeve 13 is a cylindrical surface, and the sliding sleeve 13 will abut against different positions on the outer side wall of the clamping portion 122 in the sliding process, so that the sliding sleeve 13 can generate an abutting action with the clamping portion 122 in the sliding process, in this embodiment, the abutting surface 1225 is an inclined surface, and the inclined surface extends towards the direction away from the mounting portion 121 and away from the mandrel 11, so that the sliding sleeve 13 can gradually push the clamping portion 122 along the abutting surface 1225, so that the clamping portion 122 gradually approaches the mandrel 11 until the inspection nail 2 is clamped.

In one embodiment, referring to fig. 5 to 8, the inspection pin inserter 1 further includes a connection pin 14, and the connection pin 14 penetrates the mounting portion 121 and the mandrel 11 in a radial direction to mount the mounting portion 121 on the mandrel 11, respectively. Specifically, a first mounting hole 117 penetrating in the radial direction is formed on the mandrel 11, a second mounting hole 1211 penetrating in the radial direction is formed on the mounting portion 121, the middle portion of the connecting pin 14 is penetrated into the first mounting hole 117, opposite ends of the connecting pin 14 respectively penetrate into corresponding second mounting holes 1211 on the mounting portion 121, and because the connecting pin 14 is arranged vertically to the axial direction of the mandrel 11, axial limiting and circumferential limiting of the mounting portion 121 and the mandrel 11 can be achieved through the connecting pin 14, and then the mounting portion 121 is mounted on the mandrel 11.

In one embodiment, referring to fig. 4 to 6, the mounting portion 121 is sleeved with a sleeve 15, and the connecting pin 14 is shielded in the sleeve 15. Specifically, the connecting pin 14 is in a movable plug-in fit with the mounting portion 121, and the connecting pin 14 is also in a movable plug-in fit with the mandrel 11, that is, the connecting pin 14 can be respectively inserted into the mounting portion 121 and the mandrel 11 to realize connection between the mounting portion 121 and the mandrel 11, and meanwhile, the connecting pin 14 can be respectively pulled out from the mounting portion 121 and the mandrel 11 to realize separation between the mounting portion 121 and the mandrel 11, so that the mandrel 11 and the mounting portion 121 are convenient to assemble and disassemble, and convenient to maintain. The sleeve 15 is sleeved outside the mounting part 121, and the connecting pin 14 is shielded by the sleeve 15, so that the connecting pin 14 cannot be pulled out from the mounting part 121 and the mandrel 11 in the use process, and the connecting pin 14 can be removed only after the sleeve 15 is removed. By the arrangement, the connecting pin 14 can be prevented from falling off the mounting part 121 easily in the use process under the premise of ensuring the mounting part 121 and the mandrel 11 to be convenient to assemble and disassemble, and the use stability of the inspection nail injector 1 is ensured.

Alternatively, the sleeve 15 may be fixed outside the mounting portion 121 by means of axial abutment and limiting, for example, two axial ends of the sleeve 15 abut against a step outside the mandrel 11 and a step outside the mounting portion 121, respectively. The specific manner of installation of the sleeve 15 will be described in detail later.

In one embodiment, referring to fig. 2, 4 and 5, the inspection pin injector 1 further includes an elastic member 16, the elastic member 16 is abutted between the sliding sleeve 13 and the sleeve 15, and the elastic member 16 is used for keeping the sliding sleeve 13 to drive the clamping portions 122 in a gathered state. Specifically, in the initial state, the elastic member 16 is in a compressed state and pushes the sliding sleeve 13 forward, so that the sliding sleeve 13 drives each clamping part 122 to gather towards the direction of the mandrel 11; when the inspection nail 2 needs to be assembled, an external force is needed to overcome the elasticity of the elastic piece 16 to push the sliding sleeve 13 backwards, the sliding sleeve 13 gradually loosens the clamping parts 122, the clamping parts 122 are mutually far away under the action of self elasticity, at the moment, the groove 213 of the inspection nail 2 and the positioning column 116 of the mandrel 11 can be inserted and positioned, and then the sliding sleeve 13 is gradually released, so that the sliding sleeve 13 slides forwards under the action of the elasticity of the elastic piece 16 to drive the clamping parts 122 to gather towards the mandrel 11 to clamp the inspection nail 2, and the installation of the inspection nail 2 is realized. In summary, the elastic member 16 is configured to keep the sliding sleeve 13 in the state of gathering the clamping portions 122, so that the inspection nail injector 1 is in the gathered state when not in use, and has a compact structure, small occupied space, and convenient carrying and carrying, and after the inspection nail 2 is assembled, the sliding sleeve 13 can keep the clamping portions 122 in the state of driving the clamping portions 122, and the clamping portions 122 can keep the clamping of the inspection nail 2, so that the inspection nail 2 can be firmly installed, and is convenient to be quickly implanted into bones.

In an embodiment, referring to fig. 5, a first limiting block 131 is formed on an inner wall of the sliding sleeve 13, a second limiting block 123 is formed on an outer wall of the mounting portion 121, one side of the first limiting block 131 is stopped at the second limiting block 123, and the elastic member 16 is abutted between the other side of the first limiting block 131 and the shaft sleeve 15. In the initial state, under the elastic force of the elastic piece 16, one side of the first limiting block 131 is in abutting connection with the second limiting block 123; when the external force pushes the slider, the first stopper 131 overcomes the elastic force of the elastic member 16 and is separated from the second stopper 123. In this embodiment, the second limiting block 123 is used to limit the sliding travel of the sliding sleeve 13.

Specifically, referring to fig. 5, the mandrel 11 includes a first section 111 and a second section 112, the first section 111 and the second section 112 are axially connected, the clamping member 12 and the sliding sleeve 13 are both sleeved on the first section 111, a first step 118 is formed between the first section 111 and the second section 112, the sleeve 15 is abutted between the first step 118 and the elastic member 16, the elastic member 16 is abutted between the sleeve 15 and the first limiting block 131, and the second limiting block 123 performs limiting stop on the first limiting block 131. In summary, through the arrangement of the first step 118, the first limiting block 131 and the second limiting block 123, not only the installation of the elastic member 16 is realized, but also the installation of the shaft sleeve 15 is realized, and the shaft sleeve 15 and the elastic member 16 are convenient to disassemble and assemble.

Referring to fig. 5, a driving ring 132 extends along the circumferential direction on the outer side wall of the sliding sleeve 13, and the driving ring 132 is used for holding and pushing the sliding sleeve 13 by a human hand or an external tool. Specifically, the drive ring 132 extends radially outwardly from an end of the sleeve 13 facing away from the front end 114 of the mandrel 11.

In one embodiment, referring to fig. 4-6, the staple inserter 1 further includes a sleeve 17, the sleeve 17 being fixedly secured to the second section 112, the sleeve 17 being adapted for hand grasping and manipulation of the entire staple inserter 1.

Optionally, the handle sleeve 17 is sleeved on the second section 112 in a threaded connection manner, so that the handle sleeve 17 is convenient to disassemble and assemble, and the handle sleeve 17 and the mandrel 11 are firmly installed. It will be appreciated that in other embodiments of the present application, the sleeve 17 may be secured to the second section 112 by an interference fit, a keyed connection, or the like, as is not limited only herein.

Referring to fig. 5, the mandrel 11 further includes an input portion 113, the input portion 113 is connected to an end of the second section 112 facing away from the first section 111, the outer diameter of the input portion 113 is larger than that of the second section 112, the sleeve 17 is sleeved on the second section 112, the input portion 113 is stopped on an outer end surface of the sleeve 17, and the input portion 113 is arranged outside the sleeve 17 for being knocked by an external tool, so that the inspection nail 2 is implanted into the bone.

Referring to fig. 5, the axial end surface of the input portion 113 has a convex arc shape, so that the pressure can be increased under the same external driving force.

In another aspect, the present application also provides a surgical navigation system comprising an inspection pin 2 and an inspection pin inserter 1, the inspection pin inserter 1 for implanting the inspection pin 2 into bone. Optionally, the surgical navigation system further comprises a tracker and a controller, wherein the tracker is connected with the inspection nail imbedder 1 and is used for tracking the position of the inspection nail 2, and the tracker feeds back the position information of the inspection nail 2 to the controller so as to realize the position tracking of the inspection nail 2.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims (10)

1. An inspection pin inserter for inserting an inspection pin into bone, the inspection pin inserter comprising:

the mandrel is provided with a front end and a rear end which are oppositely arranged;

the clamping piece comprises a mounting part and at least two clamping parts, the mounting part is sleeved outside the mandrel, the clamping parts are circumferentially arranged outside the mandrel at intervals, the clamping parts are provided with connecting ends and free ends which are oppositely arranged, and the connecting ends are connected with the mounting part;

the sliding sleeve is sleeved outside the mounting part and each clamping part in a sliding manner;

each clamping part has a gathering state and a separation state under the sliding drive of the sliding sleeve; when the clamping parts are in a gathering state, the free ends extend to the front side of the front end of the mandrel, and the free ends and the front end of the mandrel jointly clamp the inspection nails; when the clamping parts are in a separated state, the clamping parts are separated from each other under the action of self elasticity, and the inspection nails are loosened.

2. The inspection pin injector of claim 1 wherein the inner side of said free end has a first clamping surface and a second clamping surface, said first clamping surface being cylindrical and adapted to radially engage and clamp said inspection pin, said second clamping surface being conical and adapted to radially engage and clamp said inspection pin in a direction toward the front end of said mandrel.

3. The inspection pin applicator of claim 1, wherein a forward center of the mandrel extends in a direction away from the mandrel with a locating post for a female-male engagement with a recess of the inspection pin head.

4. The inspection pin applicator of claim 1, wherein an outer sidewall of the free end is formed with an abutment surface extending away from the mounting portion and away from the mandrel, the abutment surface for abutment with an inner wall of the sliding sleeve.

5. The inspection pin applicator of claim 1, further comprising a connecting pin extending radially through the mounting portion and the mandrel, respectively, to mount the mounting portion to the mandrel.

6. The inspection pin applicator of claim 5, wherein said mounting portion is sleeved with a sleeve, said connecting pin being shielded within said sleeve.

7. The inspection pin applicator of claim 6, further comprising an elastic member abutting between said sliding sleeve and said sleeve, said elastic member for maintaining said sliding sleeve driving each of said clamping portions in a gathered condition.

8. The inspection pin injector of claim 7, wherein a first stopper is formed on an inner wall of the sliding sleeve, a second stopper is formed on an outer wall of the mounting portion, one side of the first stopper is stopped on the second stopper, and the elastic member is abutted between the other side of the first stopper and the shaft sleeve.

9. The inspection pin injector of claim 7 wherein said mandrel comprises a first section and a second section connected to each other, said clamping member and said sliding sleeve being sequentially disposed over said first section; the inspection nail imbedding device further comprises a handle sleeve, and the handle sleeve is fixedly sleeved on the second section.

10. A surgical navigation system comprising an inspection pin and an inspection pin inserter according to any one of claims 1 to 9 for inserting the inspection pin into bone.

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