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CN-121971150-A - Elastic external fixing support for treating hammer finger

CN121971150ACN 121971150 ACN121971150 ACN 121971150ACN-121971150-A

Abstract

The invention relates to the technical field of medical instruments and discloses an elastic external fixing support for treating hammer fingers, which comprises an elastic support body, a special Kirschner wire and a common Kirschner wire, wherein the elastic support body comprises an elastic arm, a first connecting block, a second connecting block and a sliding groove, the first connecting block and the second connecting block are respectively connected with two ends of the elastic arm, the sliding groove is formed in the side part of the second connecting block, a locking hole is formed in the middle of the elastic arm, the common Kirschner wire is matched with the locking hole for use, a fixing hole is formed in the side part of the special Kirschner wire, a fastener is arranged between the sliding groove and the fixing hole, a grapple is rotatably arranged at the end part of the first connecting block, and a limiting component is arranged on the outer side of the elastic support body. The bone block is reset through the grabbing hook with controllable grabbing of bone block angle, continuous and stable dynamic pressurization is provided for the bone block through the cooperation of the elastic support body, the special Kirschner wire and the common Kirschner wire, the displacement of the bone block is avoided, safe early functional exercise is allowed, recovery is promoted, and the recovery effect of the hammer finger after treatment is improved.

Inventors

  • CHEN CHAO
  • Luo Kaiying
  • WANG GUOCHAO

Assignees

  • 深圳市人民医院
  • 河南驼人医疗器械集团有限公司

Dates

Publication Date
20260505
Application Date
20260402

Claims (10)

  1. 1. An elastic external fixing support for treating hammer fingers comprises an elastic support body (100), a special Kirschner wire (110) and a common Kirschner wire (120), and is characterized in that the elastic support body (100) comprises an elastic arm (101), a first connecting block (102) and a second connecting block (103) which are respectively connected with two ends of the elastic arm (101), and a sliding groove (104) formed on the side part of the second connecting block (103), a locking hole (105) is formed in the middle part of the elastic arm (101), the common Kirschner wire (120) is matched with the locking hole (105), a fixing hole (111) is formed in the side part of the special Kirschner wire (110), a fastening piece (130) is jointly arranged between the sliding groove (104) and the fixing hole (111), a grapple hook (140) is rotationally arranged at the end part of the first connecting block (102), a limiting component (160) is arranged on the outer side of the elastic support body (100), the limiting component (160) is matched with the common Kirschner wire (120), the elastic support body is matched with the common Kirschner wire (120), the special Kirschner wire (100) is matched with the elastic support body (100), the common Kirschner wire (110) is clamped by the elastic hook (140) through the special Kirschner wire, the elastic support body (100) is prevented from rotating.
  2. 2. The elastic external fixing support for treating hammer fingers according to claim 1, wherein the number of the elastic arms (101) is two, one ends of the two elastic arms (101) are commonly connected with the first connecting block (102), the other ends of the two elastic arms (101) are commonly connected with the second connecting block (103), and the two elastic arms (101) have a preset radian.
  3. 3. The elastic external fixation support for treating hammer finger according to claim 1, wherein the second connecting block (103) is in a flat block structure, and the elastic support body (100) is integrally formed by high-elasticity medical materials.
  4. 4. An elastic external fixation support for treating hammer fingers according to claim 1, wherein the special Kirschner wire (110) comprises a front needle body (112), a middle needle body (113) connected with the front needle body (112), and a tail connector (114) connected with the middle needle body (113).
  5. 5. An elastic external fixation stent for treating hammer fingers according to claim 4, wherein the front needle body (112) is provided as a pointed cylindrical needle section, the front needle body (112) being adapted to be screwed into the distal phalanx to provide an initial holding force; The middle needle body (113) is arranged to be gradually changed from a cylindrical needle section to a flat shape; The tail connector (114) is arranged in a flat plate shape, and the fixing hole (111) is formed in the side part of the tail connector (114).
  6. 6. An elastic external fixing support for treating hammer fingers according to claim 1, wherein the fastener (130) comprises a screw (131) and a nut (132) in threaded fit with the screw (131), the middle part of the screw (131) jointly penetrates through the sliding groove (104) and the fixing hole (111), and the nut (132) is in threaded connection with the screw (131).
  7. 7. The elastic external fixation support for treating hammer fingers according to claim 1, wherein the grapple (140) comprises a column body (141) rotatably arranged at the side part of the first connecting block (102) and a hook body (142) connected to the outer side of the column body (141), the number of the hook bodies (142) is a plurality, the hook bodies (142) are uniformly arranged on the outer side of the column body (141) in a circumferential direction, and the hook bodies (142) are made of elastic medical materials.
  8. 8. The elastic external fixation support for treating hammer fingers according to claim 7, wherein a rotating shaft (150) is movably inserted into the side portion of the first connecting block (102), the end portion of the rotating shaft (150) is movably inserted into the inner side of the grapple hook (140), a rubber capsule (151) is mounted in the inner side of the grapple hook (140), and the end portion of the rotating shaft (150) is close to the rubber capsule (151).
  9. 9. The elastic external fixation support for treating hammer fingers according to claim 1, wherein the limiting assembly (160) comprises a limiting ring (161) positioned on the outer side of the elastic support body (100), a connecting rope (162) connected between the limiting ring (161) and the elastic support body (100), a positioning ring (163) slidingly arranged on the inner side of the limiting ring (161), a first button (164) connected on one side of the positioning ring (163), a first limiting groove (165) formed on the side of the limiting ring (161) and matched with the first button (164), a second button (166) connected on the other side of the positioning ring (163), and a second limiting groove (167) formed on the side of the limiting ring (161) and matched with the second button (166).
  10. 10. The elastic external fixation support for treating hammer finger as claimed in claim 9, wherein the hole in the middle of the limiting ring (161) coincides with the locking hole (105), the common Kirschner wire (120) penetrates through the limiting ring (161) and the locking hole (105) together, and the positioning ring (163) is in intermittent contact with the common Kirschner wire (120).

Description

Elastic external fixing support for treating hammer finger Technical Field The invention relates to the technical field of medical equipment, in particular to an elastic external fixing bracket for treating hammer fingers. Background The hammer-like refers to a continuous buckling deformity of the interphalangeal joint caused by the breaking or tearing off of the extensor digitorum digitalis tendon on the dorsum of the hand at the distal phalangeal dead point, which is known as a hammer due to the drooping of the distal phalanges. The extensor digitorum is characterized in that the extensor digitorum is arranged on the back side of the far phalangeal base and has the functions of actively straightening the joint between the far phalangeal joint, namely the joint at the extreme end of the finger, the extensor digitorum is broken at the dead point of the distal phalangeal joint and is a tendinous injury, a small piece of bone is torn off and is a bone injury, the typical injury mechanism is violent buckling caused by the fact that the finger is impacted by balls in a straightened state, the ratio of the tendinous injury to the bone injury is about 3:1 most in clinic, the current treatment of the bone hammer is mainly in the following modes, 1. The stone-black method is a common effective operation mode for the current treatment of the bone hammer, the bone hammer is reset through percutaneous poking and penetrates through a fixed avulsion bone block, the mode does not need to cut skin, the wound is small, the infection risk is low, the defect that the closure operation characteristic of the bone injury is caused by the fact that the reset precision of a large or irregular piece is insufficient, and the bone fracture surface is easy to leave behind; forced penetration fixation of smaller fracture blocks, risk of fracture of the bone blocks, static fixation of single Kirschner wire, easy occurrence of loosening of fixture after operation and subsequent re-displacement or turnover of fracture blocks, 2. Wire suspension method, wherein the improvement replaces one Kirschner wire with a wire, aims to continuously pressurize the avulsion bone blocks through the tension of the wire to promote reposition, has the disadvantages that the operation is difficult to ensure accurate reposition, and the other Kirschner wire penetrating through the joint can lead the joint to be rigidly fixed and cannot realize early functional exercise, 3. Button method, which is a technology of fixing avulsion bone blocks through the wire and connecting to body surface buttons for pressurized traction, has the advantages of allowing early functional exercise of affected fingers, has the disadvantage of continuous concentrated compression of the buttons to the skin, is easy to cause ischemia and necrosis of the skin. At present, when the hammer finger caused by the bone injury is treated in the prior art, the reduction precision of the bone block by a stone black method is insufficient, the joint is rigidly fixed by a Kirschner wire penetrating through the joint by a steel wire suspension method, early functional exercise is difficult to realize, continuous concentrated compression of the skin by a button method is easy to cause ischemia and necrosis of the skin, accurate reduction of the broken bone block is inconvenient to realize during treatment, dynamic stable fixation of the bone block is difficult to be provided during the rehabilitation period, and bending finger exercise is inconvenient to realize, so that the rehabilitation effect of the hammer finger after treatment is poor, and therefore, the prior requirements are not met, and an elastic external fixing bracket for treating the hammer finger is provided. Disclosure of Invention The invention provides an elastic external fixing support for treating hammer fingers, which can realize accurate reset on broken bone blocks, provide dynamic stable fixing for the bone blocks in the rehabilitation period, and facilitate finger bending exercise so as to improve the rehabilitation effect of the hammer fingers after treatment, and solve the problems that the broken bone blocks are inconvenient to realize accurate reset and difficult to perform finger bending exercise in the background art, so that the rehabilitation effect of the hammer fingers after treatment is poor. In order to achieve the above-mentioned purpose, this disclosure provides an elasticity external fixation support of treatment hammer finger, including elastic support body, special kirschner wire and ordinary kirschner wire, the elastic support body include the elastic arm, respectively with first connecting block and the second connecting block that elastic arm both ends are connected and offer the spout of second connecting block lateral part, the locking hole has been seted up at the elastic arm middle part, ordinary kirschner wire with the locking hole cooperation is used, the fixed orifices has been seted up to special