阅读说明：本技术 一种新型手足外科用微型指骨延长装置 (Novel miniature phalanx extension device for hand and foot surgery ) 是由 夏雷 于 2021-09-08 设计创作，主要内容包括：本发明公开了一种新型手足外科用微型指骨延长装置,属于手术设备技术领域。一种新型手足外科用微型指骨延长装置,包括空心柱体,所述空心柱体内部设置有扩展组件,所述扩展组件贯穿空心柱体连接有扩展架；所述扩展组件贯穿扩展架连接有调节组件和抱紧组件,相邻所述调节组件和抱紧组件通过连接组件活动连接；位于中央的抱紧组件和调节组件之间通过弹性伸缩杆连接,所述弹性伸缩杆外部活动套设有弹簧件C；所述扩展架上开设有四个限位滑槽,所述限位滑槽内滑动连接有内滑块；本发明解决了现有技术的指骨延长装置无法通过对指节和指腹处采用适应性固定措施并且从患处拆卸比较麻烦,容易因用力不当对患处造成二次创伤的问题。(The invention discloses a novel miniature phalanx extending device for hand and foot surgery, and belongs to the technical field of surgical equipment. A novel micro phalanx extending device for hand and foot surgery comprises a hollow cylinder body, wherein an extension assembly is arranged inside the hollow cylinder body, and penetrates through the hollow cylinder body to be connected with an extension frame; the expansion assembly penetrates through the expansion frame and is connected with an adjusting assembly and a holding assembly, and the adjacent adjusting assembly and the holding assembly are movably connected through a connecting assembly; the clamping assembly and the adjusting assembly which are positioned in the center are connected through an elastic telescopic rod, and a spring part C is movably sleeved outside the elastic telescopic rod; the expansion frame is provided with four limiting sliding chutes, and the limiting sliding chutes are connected with inner sliding blocks in a sliding manner; the invention solves the problems that the phalanx extension device in the prior art cannot adopt adaptive fixing measures for the knuckle and the finger abdomen, is troublesome to disassemble from an affected part, and is easy to cause secondary wound to the affected part due to improper force application.)

1. The utility model provides a novel miniature phalanx extension for brothers surgery device, includes hollow cylinder (1), its characterized in that: an expansion assembly (5) is arranged in the hollow cylinder (1), the expansion assembly (5) penetrates through the hollow cylinder (1) and is connected with an expansion frame (2), and the expansion frame (2) is connected with one side of the hollow cylinder (1); the expansion assembly (5) penetrates through the expansion frame (2) and is connected with an adjusting assembly (3) and a holding assembly (4), and the adjacent adjusting assembly (3) and the holding assembly (4) are movably connected through a connecting assembly (6); the central holding component (4) and the adjusting component (3) are connected through an elastic telescopic rod (8), and a spring part C (9) is movably sleeved outside the elastic telescopic rod (8).

2. The novel micro phalanx extension device for hand and foot surgery as claimed in claim 1, wherein: four limiting sliding grooves are formed in the expansion frame (2), and inner sliding blocks (204) are connected in the limiting sliding grooves in a sliding mode; the front end of the inner sliding block (204) is fixedly connected with a connecting rod (7), and the tail end of the connecting rod (7) is connected with the enclasping component (4).

3. The novel micro phalanx extension device for hand and foot surgery as claimed in claim 1 or 2, wherein: the expansion frame (2) is far away from the central fixedly connected with of one side of the hollow cylinder (1) and holds the ring (201), hold ring (201) central authorities and have flexible cladding shell (202) through spring part A (203) swing joint, flexible cladding shell (202) and fingertip contact.

4. The novel micro phalanx extension device for hand and foot surgery as claimed in claim 3, wherein: the expansion assembly (5) comprises an outer sleeve (501), the tail end of the outer sleeve (501) is connected with the outside of an inner sleeve (503) in a sliding mode, and one end of the inner sleeve (503) is fixedly connected to one side of the center of the expansion frame (2) far away from the containing ring (201); the other end of the inner sleeve (503) is in threaded connection with a threaded column (504), the front end of the threaded column (504) is fixedly connected with a knob, the knob penetrates through the front end of the outer sleeve (501) and extends outwards, and the knob is rotatably clamped with the front end of the outer sleeve (501).

5. The novel micro phalanx extension device for hand and foot surgery as claimed in claim 4, wherein: the outer side wall of the outer sleeve (501) is fixedly connected with four connecting seats (506), and the front end and the rear end of each connecting seat (506) are respectively and rotatably connected with a connecting inclined rod (505); the tail end of the connecting inclined rod (505) is rotatably connected with a clamping plate (502), a clamping protrusion is arranged on the outer side of the clamping plate (502), a clamping groove is formed in the hollow cylinder (1), and the clamping plate (502) is matched with the hollow cylinder (1) through the clamping protrusion and the clamping groove.

6. The novel micro phalanx extension device for hand and foot surgery as claimed in claim 5, wherein: the clasping assembly (4) comprises a clasping block A (401) and a clasping block B (402), and the clasping block A (401) and the clasping block B (402) are arranged at intervals; clamping elements (404) and positioning elements (403) are arranged between the adjacent clamping blocks A (401) and the adjacent clamping blocks B (402), and the four groups of clamping elements (404) and positioning elements (403) are connected end to end.

7. The novel micro phalanx extension device for hand and foot surgery as claimed in claim 6, wherein: the clamping piece (404) comprises two clamping rods, the clamping rods are respectively rotatably connected with the inner sides of the clasping block A (401) and the clasping block B (402) through rotating columns (406), and the front ends of the clamping rods are provided with magnetic arc blocks; the positioning piece (403) is fixedly connected with the inner sides of the enclasping block A (401) and the enclasping block B (402) respectively, a central column (405) is fixedly connected to the tail end of the positioning piece (403), and the magnetic attraction arc block is movably clamped outside the central column (405).

8. The novel micro phalanx extension device for hand and foot surgery as claimed in claim 7, wherein: the adjusting assembly (3) comprises two groups of adjusting blocks A (301) and adjusting blocks B (302), the centers of the two adjusting blocks A (301) are fixedly connected with accommodating sleeves (303), and the centers of the two adjusting blocks B (302) are fixedly connected with extension rods (304); the spring piece B (305) is movably sleeved outside the extension rod (304), and two ends of the extension rod (304) are movably inserted into the two accommodating sleeves (303) respectively; adjacent adjust block A (301) and hold tightly and connect through elasticity telescopic link (8) between block A (401), it is adjacent adjust block A (301) and hold tightly and connect through elasticity telescopic link (8) between block A (401) and adjacent adjust block B (302) and hold tightly and connect through elasticity telescopic link (8) between block B (402).

9. The novel micro phalanx extension device for hand and foot surgery as claimed in claim 8, wherein: the connecting assembly (6) comprises a positioning block A (601) and a positioning block B (604), the positioning block A (601) is fixedly connected to the outer side of the clasping block A (401) or the outer side of the clasping block B (402), and the positioning block B (604) is fixedly connected to the outer side of the adjusting block A (301) or the adjusting block B (302); the adjusting block A (301) central authorities fixedly connected with screwed pipe (602), screwed pipe (602) front end threaded connection has interior pole of screw thread (603), interior pole of screw thread (603) threaded connection is in locating piece B (604) central authorities, the end matching of interior pole of screw thread (603) has micro motor.

Technical Field

The invention belongs to the technical field of surgical equipment, and particularly relates to a novel miniature phalanx extending device for hand and foot surgery.

Background

The bone lengthening is to stretch the bone, namely, the bone is cut, soft tissues and blood supply are reserved, a special traction device is adopted to fix two ends, the tension stress rule is applied to gradually apply tension to slowly draw the bone section, organism tissues are continuously stimulated, the regeneration potential of the human tissues is stimulated, new bone is formed in the osteotomy gap, the aim of bone regeneration is achieved, the phalange lengthening is needed when the phalange is shortened due to trauma or congenital reasons, and the shortened phalange reaches the normal length.

However, the phalanx extension device in the prior art cannot adopt adaptive fixing measures for the phalanx and the finger abdomen, the phalanx extension process is unstable, the phalanx is easy to deform when being extended, the phalanx is troublesome to detach from an affected part, and secondary trauma to the affected part is easily caused by improper exertion of force; therefore, the invention provides a novel micro phalanx extension device for hand and foot surgery to solve the problems.

Disclosure of Invention

The invention aims to solve the following problems in the prior art:

(1) the phalanx extending device in the prior art cannot adopt adaptive fixing measures on the knuckle and the finger pulp, the phalanx extending process is unstable, and the phalanx is easy to deform during extending; and the dressing is troublesome to detach from the affected part, and is easy to cause secondary wound to the affected part due to improper force.

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

a novel micro phalanx extending device for hand and foot surgery comprises a hollow cylinder body, wherein an extending component is arranged inside the hollow cylinder body, penetrates through the hollow cylinder body and is connected with an extending frame, and the extending frame is connected with one side of the hollow cylinder body; the expansion assembly penetrates through the expansion frame and is connected with an adjusting assembly and a holding assembly, and the adjacent adjusting assembly and the holding assembly are movably connected through a connecting assembly; the clasping component and the adjusting component which are positioned at the center are connected through an elastic telescopic rod, and a spring part C is movably sleeved outside the elastic telescopic rod.

Preferably, the expansion frame is provided with four limiting sliding chutes, and the limiting sliding chutes are connected with inner sliding blocks in a sliding manner; the front end of the inner sliding block is fixedly connected with a connecting rod, and the tail end of the connecting rod is connected with the enclasping assembly.

Preferably, the expansion frame is fixedly connected with an accommodating ring in the center of one side far away from the hollow cylinder, a flexible covering shell is movably connected in the center of the accommodating ring through a spring part A, and the flexible covering shell is contacted with the finger tips.

Preferably, the expansion assembly comprises an outer sleeve, the tail end of the outer sleeve is slidably connected to the outside of the inner sleeve, and one end of the inner sleeve is fixedly connected to one side of the center of the expansion frame away from the containing ring; the other end of the inner sleeve is in threaded connection with a threaded column, the front end of the threaded column is fixedly connected with a knob, the knob penetrates through the front end of the outer sleeve and extends outwards, and the knob is clamped with the front end of the outer sleeve in a rotating mode.

Preferably, the outer side wall of the outer sleeve is fixedly connected with four connecting seats, and the front end and the rear end of each connecting seat are respectively and rotatably connected with a connecting inclined rod; the tail end of the connecting inclined rod is rotatably connected with a clamping plate, a clamping protrusion is arranged on the outer side of the clamping plate, a clamping groove is formed in the hollow cylinder, and the clamping plate is matched with the hollow cylinder through the clamping protrusion and the clamping groove.

Preferably, the clasping assembly comprises a clasping block A and a clasping block B, and the clasping block A and the clasping block B are arranged at intervals; and clamping pieces and positioning pieces are arranged between the adjacent clamping blocks A and the adjacent clamping blocks B, and the four clamping pieces and the positioning pieces are connected end to end.

Preferably, the clamping piece comprises two clamping rods, the clamping rods are respectively and rotatably connected with the inner sides of the clasping block A and the clasping block B through rotating columns, and the front ends of the clamping rods are provided with magnetic arc attracting blocks; the locating element respectively with hold the inboard fixed connection of block A and the block B of holding tightly, the terminal fixedly connected with center post of locating element, the arc piece activity joint is inhaled to magnetism is outside at the center post.

Preferably, the adjusting assembly comprises two groups of adjusting blocks A and adjusting blocks B, the centers of the two adjusting blocks A are fixedly connected with accommodating sleeves, and the centers of the two adjusting blocks B are fixedly connected with extension rods; the spring part B is movably sleeved outside the extension rod, and two ends of the extension rod are movably inserted into the two accommodating sleeves respectively; adjacent the regulating block A and hold tightly and connect through elastic telescopic rod between the block A, adjacent regulating block A and hold tightly and connect through elastic telescopic rod between the block A and be adjacent regulating block B and hold tightly and connect through elastic telescopic rod between the block B.

Preferably, the connecting assembly comprises a positioning block A and a positioning block B, the positioning block A is fixedly connected to the outer side of the clasping block A or the outer side of the clasping block B, and the positioning block B is fixedly connected to the outer side of the adjusting block A or the outer side of the adjusting block B; the central fixedly connected with screwed pipe of regulating block A, screwed pipe front end threaded connection has interior pole of screw thread, interior pole threaded connection of screw thread is in locating piece B central authorities, the end-to-end matching of interior pole of screw thread has micro motor.

Compared with the prior art, the invention provides a novel miniature phalanx extension device for hand and foot surgery, which has the following beneficial effects:

(1) according to the invention, by arranging the extension assembly, when the finger holding device is used, a finger needing to be extended to a phalanx sequentially passes through the first adjusting assembly, the first holding assembly, the second adjusting assembly and the second holding assembly from the adjusting assembly at the tail end, a fingertip abuts against the flexible covering shell in the containing ring, then two groups of holding assemblies are respectively positioned at two knuckle positions and two adjusting assemblies are respectively positioned at two finger belly positions in an adaptive manner by adjusting each part in the holding assemblies and the adjusting assemblies, and the holding assemblies and the adjusting assemblies are internally provided with flexible layers so as to be in flexible contact with the skin of the finger.

(2) When this device uses, the accessible is adjusted the extension subassembly and is driven adjusting part and hold the subassembly expansion or tighten up tightly, make the screw thread post rotate through rotating the terminal knob of screw thread post promptly, the screw thread post can drive the outer tube and move forward when rotating, the outer tube drives the outside expansion of block board through connecting the down tube, under the limiting displacement of interior slider and expansion frame, the block board corresponds the block until the block recess with hollow cylinder inner wall with hollow cylinder contact gradually, can drive adjusting part and hold the subassembly expansion through interior slider and connecting rod this moment, thereby be convenient for take off this device from patient's finger.

(3) According to the invention, by arranging the adjusting assembly and the enclasping assembly, when the adjusting assembly and the enclasping assembly are driven to expand or tighten by the expanding assembly: the distance between the adjusting block A and the adjusting block B in the adjusting assembly is changed, so that the extension rod is driven to slide in or out along the accommodating sleeve, and the contact with the skin of the finger is adjusted by matching with the spring part B; when the clamping piece A and the clamping piece B in the clamping assembly are unfolded or tightened, the clamping piece is required to be opened firstly, so that the clamping piece and the positioning piece are separated from a locking state, and then the clamping piece and the positioning piece are driven to move respectively when the distance between the clamping piece A and the clamping piece B is changed, so that the device is convenient to install and dismount.

(4) According to the invention, by arranging the plurality of groups of connecting components, the threaded inner rod can be driven to rotate by the micro motor during use, so that the threaded inner rod extends inwards or outwards along the threaded pipe, the distance between the adjacent adjusting components and the clasping component is further adjusted, and the adjusting component and the clasping component positioned in the middle can also adjust the distance through the elastic telescopic rod and the spring part C, thereby adapting to the knuckle lengths of different patients.

Drawings

FIG. 1 is a schematic structural view of a novel micro phalanx extension device for hand and foot surgery according to the present invention;

FIG. 2 is a schematic structural view of the novel miniature phalanx extension device for hand and foot surgery, which is turned to one hundred and eighty degrees in FIG. 1;

FIG. 3 is a schematic view of a part of the structure of a novel micro phalanx extension device for hand and foot surgery according to the present invention;

FIG. 4 is a schematic structural view of the interior of a hollow cylinder of the novel micro phalanx extension device for hand and foot surgery of the present invention;

FIG. 5 is a first schematic diagram showing the detachment of the extension assembly of the novel micro phalanx extension device for hand and foot surgery according to the present invention;

FIG. 6 is a schematic diagram showing a second disassembled expansion module of the novel micro phalanx extension device for hand and foot surgery of the present invention;

FIG. 7 is a schematic view of the connection between the expansion assembly and the adjustment assembly and the clasping assembly in the novel micro phalanx extension device for hand and foot surgery provided by the invention;

FIG. 8 is a first schematic view showing the connection between the adjusting component and the clasping component in the novel micro phalanx extension device for hand and foot surgery provided by the invention;

FIG. 9 is a schematic view showing the connection between the adjusting component and the clasping component in the novel micro phalanx extension device for hand and foot surgery provided by the invention;

FIG. 10 is a schematic diagram showing the detachment of the adjusting component and the clasping component of the novel micro phalanx extension device for hand and foot surgery according to the present invention;

fig. 11 is a schematic view showing the connection between the positioning member and the clamping member of the novel micro phalanx extension device for hand and foot surgery according to the present invention.

The reference numbers in the figures illustrate:

1. a hollow cylinder; 2. an expansion frame; 201. a containment ring; 202. a flexible covering shell; 203. a spring member A; 204. an inner slide block; 3. an adjustment assembly; 301. an adjusting block A; 302. an adjusting block B; 303. a housing sleeve; 304. an extension rod; 305. a spring member B; 4. a clasping component; 401. a hugging block A; 402. a hugging block B; 403. a positioning member; 404. a clamping member; 405. a central column; 406. a spin column; 5. an expansion component; 501. an outer sleeve; 502. a clamping plate; 503. an inner sleeve; 504. a threaded post; 505. connecting the inclined rod; 506. a connecting seat; 6. a connecting assembly; 601. positioning a block A; 602. a threaded pipe; 603. a threaded inner rod; 604. positioning a block B; 7. a connecting rod; 8. an elastic telescopic rod; 9. and a spring member C.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1-6, a novel micro phalanx extension device for hand and foot surgery comprises a hollow cylinder 1, an extension component 5 is arranged inside the hollow cylinder 1, the extension component 5 penetrates through the hollow cylinder 1 and is connected with an extension frame 2, and the extension frame 2 is connected with one side of the hollow cylinder 1; the expansion assembly 5 penetrates through the expansion frame 2 and is connected with the adjusting assembly 3 and the enclasping assembly 4, and the adjacent adjusting assembly 3 and the enclasping assembly 4 are movably connected through the connecting assembly 6; the central holding component 4 and the adjusting component 3 are connected through an elastic telescopic rod 8, and a spring part C9 is movably sleeved outside the elastic telescopic rod 8;

four limiting sliding grooves are formed in the expansion frame 2, and inner sliding blocks 204 are connected in the limiting sliding grooves in a sliding mode; the front end of the inner sliding block 204 is fixedly connected with a connecting rod 7, and the tail end of the connecting rod 7 is connected with the enclasping component 4;

the center of one side, far away from the hollow cylinder 1, of the expansion frame 2 is fixedly connected with an accommodating ring 201, the center of the accommodating ring 201 is movably connected with a flexible coating shell 202 through a spring part A203, and the flexible coating shell 202 is contacted with a fingertip;

the expansion assembly 5 comprises an outer sleeve 501, the end of the outer sleeve 501 is slidably connected to the outside of an inner sleeve 503, and one end of the inner sleeve 503 is fixedly connected to the side of the center of the expansion frame 2 away from the containing ring 201; the other end of the inner sleeve 503 is in threaded connection with a threaded column 504, the front end of the threaded column 504 is fixedly connected with a knob, the knob penetrates through the front end of the outer sleeve 501 and extends outwards, and the knob is rotatably clamped with the front end of the outer sleeve 501;

the outer side wall of the outer sleeve 501 is fixedly connected with four connecting seats 506, and the front end and the rear end of each connecting seat 506 are respectively and rotatably connected with a connecting inclined rod 505; the tail end of the connecting inclined rod 505 is rotatably connected with a clamping plate 502, a clamping protrusion is arranged on the outer side of the clamping plate 502, a clamping groove is formed in the hollow column 1, and the clamping plate 502 is matched with the hollow column 1 through the clamping protrusion and the clamping groove;

according to the invention, by arranging the extension component 5, when the finger-holding type finger clip is used, a finger which needs to be extended to a phalanx sequentially passes through the first adjusting component 3, the first holding component 4, the second adjusting component 3 and the second holding component 4 from the adjusting component 3 at the tail end, a fingertip abuts against the flexible coating shell 202 in the accommodating ring 201, then two groups of holding components 4 are respectively positioned at two finger joints, the two adjusting components 3 are respectively positioned at two finger abdomens in an adaptive manner by adjusting the holding components 4 and the adjusting components 3, and flexible layers are arranged in the holding components 4 and the adjusting components 3 so as to be in flexible contact with finger skins;

when this device uses, the accessible is adjusted extension subassembly 5 and is driven adjusting part 3 and hug closely subassembly 4 and expand or tighten up, make screw thread post 504 rotate through rotating the terminal knob of screw thread post 504 promptly, screw thread post 504 can drive outer tube 501 and move forward when rotating, outer tube 501 drives the outside expansion of block board 502 through connecting down tube 505, under the limiting displacement of interior slider 204 and extension frame 2, block board 502 contacts gradually with hollow cylinder 1 until the block recess with hollow cylinder 1 inner wall corresponds the block, can drive adjusting part 3 and embrace subassembly 4 through interior slider 204 and connecting rod 7 this moment and expand, thereby be convenient for take off this device from patient's finger.

Example 2:

as shown in fig. 7 to 11, there is a difference based on embodiment 1 in that:

the clasping component 4 comprises a clasping block A401 and a clasping block B402, and the clasping block A401 and the clasping block B402 are arranged at intervals; clamping elements 404 and positioning elements 403 are arranged between the adjacent clamping blocks A401 and the adjacent clamping blocks B402, and the four groups of clamping elements 404 and the positioning elements 403 are connected end to end;

the clamping piece 404 comprises two clamping rods which are respectively rotatably connected with the inner sides of the clasping block A401 and the clasping block B402 through rotating columns 406, and the front ends of the clamping rods are provided with magnetic arc attracting blocks; the positioning piece 403 is respectively and fixedly connected with the inner sides of the enclasping block A401 and the enclasping block B402, the tail end of the positioning piece 403 is fixedly connected with a central column 405, and the magnetic arc block is movably clamped outside the central column 405;

the adjusting assembly 3 comprises two groups of adjusting blocks A301 and adjusting blocks B302, the centers of the two adjusting blocks A301 are fixedly connected with accommodating sleeves 303, and the centers of the two adjusting blocks B302 are fixedly connected with extension rods 304; the spring part B305 is movably sleeved outside the extension rod 304, and two ends of the extension rod 304 are movably inserted into the two accommodating sleeves 303 respectively;

according to the invention, by arranging the adjusting component 3 and the enclasping component 4, when the expanding component 5 drives the adjusting component 3 and the enclasping component 4 to expand or contract: the distance between the adjusting block A301 and the adjusting block B302 in the adjusting assembly 3 is changed, so that the extending rod 304 is driven to slide in or out along the accommodating sleeve 303, and the contact with the skin of the finger is adjusted by matching with the spring part B305;

in the process of unfolding or tightening the clasping block A401 and the clasping block B402 in the clasping assembly 4, the clamping piece 404 needs to be opened firstly to enable the clamping piece 404 and the positioning piece 403 to be separated from the locking state, and then the clamping piece 404 and the positioning piece 403 are respectively driven to move when the distance between the clasping block A401 and the clasping block B402 is changed, so that the device is convenient to mount and dismount.

Example 3:

as shown in FIGS. 8 to 10, the following differences are based on the embodiments 1 to 2:

the adjacent adjusting blocks A301 and the clasping blocks A401 are connected through elastic telescopic rods 8, and the adjacent adjusting blocks A301 and the clasping blocks A401 are connected through the elastic telescopic rods 8, and the adjacent adjusting blocks B302 and the clasping blocks B402 are connected through the elastic telescopic rods 8;

the connecting assembly 6 comprises a positioning block A601 and a positioning block B604, the positioning block A601 is fixedly connected to the outer side of the enclasping block A401 or the enclasping block B402, and the positioning block B604 is fixedly connected to the outer side of the adjusting block A301 or the adjusting block B302; a threaded pipe 602 is fixedly connected to the center of the adjusting block A301, the front end of the threaded pipe 602 is in threaded connection with a threaded inner rod 603, the threaded inner rod 603 is in threaded connection with the center of the positioning block B604, and the tail end of the threaded inner rod 603 is matched with a micro motor;

according to the invention, by arranging the plurality of groups of connecting components 6, the micro motor can drive the inner threaded rod 603 to rotate when the device is used, so that the inner threaded rod 603 extends inwards or outwards along the threaded pipe 602, the distance between the adjacent adjusting components 3 and the clasping component 4 is further adjusted, and the adjusting components 3 and the clasping components 4 positioned in the middle can adjust the distance through the elastic telescopic rod 8 and the spring part C9, thereby adapting to the finger joint lengths of different patients.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.