阅读说明：本技术 一种平足治疗用手术工具 (Surgical tool for flat foot treatment ) 是由 鹿亮 高耀平 许凌峰 张明珠 赵宏谋 蔡琴 于 2021-09-23 设计创作，主要内容包括：本发明公开了一种平足治疗用手术工具,包括界面螺钉,还包括螺钉旋入工具,所述界面螺钉包括锥柱状的螺钉本体,螺钉本体靠近螺钉旋入工具的端面开设有起子槽；所述螺钉旋入工具包括拧入手柄、拧入起子杆、软组织保护套和导向导针,所述软组织保护套包括前端的保护套筒和活动套装在拧入起子杆外周的套筒部,所述螺钉本体内部开设有贯穿起子槽的螺钉中心通孔,螺钉本体通过螺钉中心通孔活动套装在导向导针前端,所述拧入起子杆内部开设有起子杆中心通孔,拧入起子杆通过起子杆中心通孔活动套装在导向导针上。本发明结构设计合理,能够简化手术操作；可有效减缓支撑面塌陷的可能性；植入后的防退效果更好。(The invention discloses an operation tool for flat foot treatment, which comprises an interface screw and a screw screwing tool, wherein the interface screw comprises a conical screw body, and a screwdriver groove is formed in the end surface of the screw body, which is close to the screw screwing tool; the screw screwing tool comprises a screwing handle, a screwing screwdriver rod, a soft tissue protective sleeve and a guide needle, wherein the soft tissue protective sleeve comprises a protective sleeve barrel at the front end and a sleeve barrel movably sleeved on the periphery of the screwing screwdriver rod, a screw center through hole penetrating through a screwdriver groove is formed in the screw body, the screw body is movably sleeved at the front end of the guide needle through the screw center through hole, the screwing screwdriver rod is internally provided with a screwdriver rod center through hole, and the screwing screwdriver rod is movably sleeved on the guide needle through the screwdriver rod center through hole. The invention has reasonable structural design and can simplify the operation; the possibility of collapse of the supporting surface can be effectively relieved; the anti-receding effect after implantation is better.)

1. Surgical tool for flat foot treatment, comprising an interface screw (5), characterized in that: the interface screw (5) comprises a conical screw body (51), external threads (52) are arranged on the circumferential outer wall of the screw body (51), and a screwdriver groove (54) is formed in the end face, close to the screw screwing tool, of the screw body (51);

the screw screwing tool comprises a screwing handle (1), a screwing screwdriver rod (3), a soft tissue protective sleeve and a guide pin (4), the soft tissue protective sleeve comprises a protective sleeve (22) at the front end and a sleeve part (2) movably sleeved on the periphery of the screwed screwdriver rod (3), a screw center through hole penetrating through the screwdriver groove (54) is formed in the screw body (51), the screw body (51) is movably sleeved at the front end of the guide pin (4) through the screw center through hole, a screwdriver rod central through hole is formed in the screwing screwdriver rod (3), the screwing screwdriver rod (3) is movably sleeved on the guide pin (4) through the screwdriver rod central through hole, a screwdriver head (32) used for being in plug-in fit with the screwdriver groove (54) extends from the front end of the screwing screwdriver rod (3), and a plug-in rod (31) with a non-circular cross section extends from the rear end of the screwing screwdriver rod (3);

the handle clamping structure is characterized in that a handle inserting groove (12) matched with the sleeve portion (2) is formed in the front end face of the screwing handle (1), a handle clamping groove (11) penetrating through the rear end of the screwing handle (1) is formed in the center of the end face of the handle inserting groove (12), the cross section of the handle clamping groove (11) is non-circular, the inserting rod (31) is inserted into the handle clamping groove (11), a pair of hemispherical protruding portions (21) are arranged on the outer wall of the rear end of the sleeve portion (2), a pair of hemispherical clamping grooves (14) corresponding to the hemispherical protruding portions (21) are formed in the front end face of the screwing handle (1), and a pair of axial guide grooves (13) corresponding to the hemispherical protruding portions (21) are formed in the inner wall of the handle inserting groove (12).

2. A surgical tool for flat foot treatment according to claim 1, wherein: the interior of the protective sleeve (22) is provided with a sleeve cavity for accommodating an interface screw (5).

3. A surgical tool for flat foot treatment according to claim 1, wherein: the soft tissue protective sleeve adopts a transparent protective sleeve.

4. A surgical tool for flat foot treatment according to claim 1, wherein: a plurality of punching grooves (53) for cutting off the external thread (52) are distributed on the periphery of the screw body (51).

5. A surgical tool for flat foot treatment according to claim 1, wherein: the interface screw (5) is made of Ti-2448.

6. A surgical tool for flat foot treatment according to claim 1, wherein: the cross section of the handle clamping groove (11) is rectangular, and the cross section of the plug-in rod (31) is also rectangular.

7. A surgical tool for flat foot treatment according to claim 1, wherein: the inner wall of the screwdriver groove (54) is compounded with a magnetic conductive metal layer, a magnetic block is embedded in the screwdriver head (32), and the interface screw (5) is adsorbed by the magnetic block.

Technical Field

The invention relates to the technical field of medical instruments, in particular to an operation tool for flat foot treatment.

Background

When the operation is used for treating the flat foot, the gap between the talus and the calcaneus is generally required to be adjusted through the interface screw to achieve the effect. At present, the interface screw for clinical application is mainly a foreign product, the material is mainly titanium alloy and implantation stainless steel, and the operation method is to introduce the implant interface screw to the gap through a guide pin and screw the implant interface screw by using a special tool.

The problems reflected by the domestic clinical treatment flat foot operation at present mainly comprise: 1. the operation of surgical implantation is complicated; 2. the elastic modulus of the implant material is high, the impact on the implant support surface is large, and collapse height loss can occur; 3. the holding force after implantation is sometimes insufficient, and a withdrawal phenomenon occurs.

Disclosure of Invention

The present invention is directed to a surgical tool for flat foot treatment to solve the problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

an operation tool for flat foot treatment comprises an interface screw and a screw screwing tool, wherein the interface screw comprises a conical screw body, external threads are arranged on the circumferential outer wall of the screw body, and a screwdriver groove is formed in the end face, close to the screw screwing tool, of the screw body;

the screw screwing tool comprises a screwing handle, a screwing screwdriver rod, a soft tissue protective sleeve and a guide pin, wherein the soft tissue protective sleeve comprises a protective sleeve at the front end and a sleeve part movably sleeved on the periphery of the screwing screwdriver rod, a screw central through hole penetrating through a screwdriver groove is formed in the screw body, the screw body is movably sleeved at the front end of the guide pin through the screw central through hole, a screwdriver rod central through hole is formed in the screwing screwdriver rod, the screwing screwdriver rod is movably sleeved on the guide pin through the screwdriver rod central through hole, a screwdriver head used for being in plug-in fit with the screwdriver groove extends from the front end of the screwing screwdriver rod, and a plug-in rod with a non-circular cross section extends from the rear end of the screwing screwdriver rod;

the front end face of the screwing handle is provided with a handle slot matched with the sleeve portion, the center of the end face of the handle slot is provided with a handle clamping groove penetrating through the rear end of the screwing handle, the cross section of the handle clamping groove is non-circular, the insertion rod is inserted into the handle clamping groove, the outer wall of the rear end of the sleeve portion is provided with a pair of hemispherical convex portions, the front end face of the screwing handle is provided with a pair of hemispherical clamping grooves corresponding to the hemispherical convex portions, and the inner wall of the handle slot is further provided with a pair of axial guide grooves corresponding to the hemispherical convex portions.

Preferably, the protective sleeve has a barrel cavity therein for receiving an interface screw.

Preferably, the soft tissue protective sleeve is a transparent protective sleeve.

Preferably, the outer circumference of the screw body is provided with a plurality of cutting grooves for cutting the external thread.

Preferably, the interface screw is made of Ti-2448.

Preferably, the cross section of the handle clamping groove is rectangular, and the cross section of the insertion rod is also rectangular.

Preferably, the inner wall of the screwdriver groove is compounded with a magnetic conductive metal layer, a magnetic block is embedded in the screwdriver head, and the interface screw is adsorbed by the magnetic block.

Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable structural design and can simplify the operation; the implanted super-elastic material is used as an interface screw, so that the possibility of collapse of the supporting surface is effectively relieved; the structure design of the implant (interface screw) is reasonable, and the height fine adjustment is convenient; and the anti-backing effect after the interface screw is implanted is better.

Drawings

FIG. 1 is a perspective view of a surgical tool for flat foot treatment;

FIG. 2 is a schematic view of an interface screw of a surgical tool for flat foot treatment;

FIG. 3 is a schematic view showing a handle screwed into a surgical tool for flat foot treatment;

FIG. 4 is a schematic cross-sectional view of a surgical tool for flat foot treatment;

fig. 5 is a perspective view of an assembled surgical tool for flat foot treatment.

In the figure: 1-screwing in a handle, 11-a handle clamping groove, 12-a handle slot, 13-an axial guide groove, 14-a hemispherical clamping groove, 2-a sleeve part, 21-a hemispherical protrusion part, 22-a protective sleeve, 3-a screwing in screwdriver rod, 31-an inserting rod, 32-a screwdriver head, 4-a guide pin, 5-an interface screw, 51-a screw body, 52-an external thread, 53-a punching groove and 54-a screwdriver groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1 to 5, an operation tool for flat foot treatment includes an interface screw 5 and a screw screwing tool, the interface screw 5 includes a conical screw body 51, an external thread 52 is provided on the circumferential outer wall of the screw body 51, and a screwdriver slot 54 is provided on the end surface of the screw body 51 near the screw screwing tool;

the screw screwing tool comprises a screwing handle 1, a screwing screwdriver rod 3, a soft tissue protective sleeve and a guide pin 4, wherein the soft tissue protective sleeve comprises a protective sleeve 22 at the front end and a sleeve part 2 movably sleeved on the periphery of the screwing screwdriver rod 3, a screw center through hole penetrating through a screwdriver groove 54 is formed in the screw body 51, the screw body 51 is movably sleeved at the front end of the guide pin 4 through the screw center through hole, a screwdriver rod center through hole is formed in the screwing screwdriver rod 3, the screwing screwdriver rod 3 is movably sleeved on the guide pin 4 through the screwdriver rod center through hole, a screwdriver head 32 used for being in plug-in fit with the screwdriver groove 54 extends from the front end of the screwing screwdriver rod 3, and a plug-in rod 31 with a non-circular section extends from the rear end of the screwing screwdriver rod 3; the driver head 32 and the driver socket 54 may be inserted together with a transition fit so that the interface screw 5 does not easily disengage from the driver head 32. Or a magnetic conductive metal layer is compounded in the screwdriver groove 54, a magnetic block is embedded in the screwdriver head 32, and the interface screw 5 is adsorbed by the magnetic block.

The front end face of the screwed handle 1 is provided with a handle slot 12 used for being matched with the sleeve part 2, the center of the end face of the handle slot 12 is provided with a handle clamping groove 11 penetrating through the rear end of the screwed handle 1, the section of the handle clamping groove 11 is non-circular, the insertion rod 31 is inserted into the handle clamping groove 11, the outer wall of the rear end of the sleeve part 2 is provided with a pair of hemispherical convex parts 21, the front end face of the screwed handle 1 is provided with a pair of hemispherical clamping grooves 14 used for corresponding to the hemispherical convex parts 21, and the inner wall of the handle slot 12 is further provided with a pair of axial guide grooves 13 used for corresponding to the hemispherical convex parts 21.

Wherein the protecting sleeve 22 has a barrel cavity inside for accommodating the interface screw 5. The soft tissue protective sleeve adopts a transparent protective sleeve. The screwing in of the screwdriver rod 3 and the interface screw 5 can be visually seen, and the operation of the implantation operation is more convenient.

The working principle of the invention is as follows: the guide pin 4 is drawn out forwards, the front end of the guide pin 4 is inserted into an implantation part, then, along the axial direction of the guide pin 4, the screwing handle 1 is pushed to be screwed, the screwing screwdriver rod 3 can be driven to be screwed, the interface screw 5 moves forwards, after the front end of the interface screw 5 is inserted into a bone surface, the soft tissue protective sleeve is screwed clockwise, a pair of hemispherical convex parts 21 at the rear end of the sleeve part 2 move to the axial guide groove 13 from the hemispherical clamping groove 14, the sleeve part 2 at the moment can retreat into the handle slot 12, then the screwing handle 1 is screwed, the screwing screwdriver rod 3 is driven to rotate, the interface screw 5 can be screwed, the operation implantation operation is convenient to use, and the fine adjustment of the implantation height of the interface screw 5 is conveniently carried out.

Further, a plurality of die-cut grooves 53 for cutting the external thread 52 are formed in the outer periphery of the screw body 51. Structural design like this for screw body 51 can clamp better inside the bone, and the effect of preventing moving back after implanting is better.

In this embodiment, the interface screw 5 is made of Ti-2448. Has high strength, super elasticity and low elastic modulus, has little influence on the implanted support surface and reduces the possibility of the support surface collapsing.

Specifically, the section of the handle clamping groove 11 is rectangular, and the section of the insertion rod 31 is also rectangular.

The invention has reasonable structural design and can simplify the operation; the implanted super-elastic material is used as the interface screw 5, so that the possibility of collapse of the supporting surface is effectively relieved; the implant (the interface screw 5) is reasonable in structural design and convenient for fine adjustment of height; and the anti-backing effect after the interface screw 5 is implanted is better.

In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.