Finger orthosis

Abstract

A finger orthosis comprises a sheath worn outside a palm, an orthosis support and a joint support. The joint support comprises a connecting arm and a suspension arm, the suspension arm is arranged on the connecting arm so that the connecting arm can be suspended, the correcting support is movably connected with the connecting arm, and the fixing base is locked after the correcting support axially moves along the connecting arm according to the length of the phalanx or the correcting stress position. And the traction mechanism is assembled with the sheath and is arranged on the back of the hand. The traction piece is in contact with the joint supports, one end of the traction piece is fixed to the joint support at the far end of the finger, the other end of the traction piece is arranged on the traction base, acting force is applied to the traction piece, the relaxation state of the traction piece is adjusted, and the finger with flexor tendon contracture is corrected. Compared with an existing fixing support, the finger orthosis provided by the invention has the advantages that the operation intensity and operation time consumption are obviously reduced, the articular surface is not damaged, subcutaneous blood vessels and nerves of fingers are not easily damaged, and the risk of disability caused by bleeding and nerve touch is reduced or avoided.

Description

Technical Field

[0001] The invention relates to a medical device, in particular to an orthosis, which is beneficial for orthopedic treatment of fingers with vascular malformation and limb contracture deformity. Background Art

[0002] Hemangiomas / vascular malformations affect the skin and deeper tissues, including tendons, muscles, nerves, and even bones. Contractures caused by hemangiomas / vascular malformations are usually due to fibrotic changes in the hemangiomas / vascular malformations themselves or after their treatment, which affect the structure and function of the tendons and surrounding tissues. Contractures often span multiple joints. Therefore, special attention should be paid to the treatment of blood vessels during treatment to reduce the risk of bleeding.

[0003] Hemangiomas / vascular malformations affect a wide range of areas and require muscle attachment, fascia reconstruction, and special rehabilitation strategies after hemangioma removal to improve blood circulation and reduce the risk of contracture recurrence. For contractures caused by burns or fractures, the rehabilitation plan may focus more on restoring joint mobility and muscle strength.

[0004] Figure 1 This is a photo of the current clinical correction of fingers with vascular malformations and limb contracture deformities. The Ilizarov external fixator has unique advantages in the correction of limb deformities and bone lengthening, but it is not suitable for the correction of fingers with vascular malformations and limb contracture deformities. There are also micro fixators, but the original design of these devices is mainly developed for the treatment of clubfoot, short fingers and deformities. Although they can basically meet the local traction of fingers, at least two Kirschner wires need to be inserted obliquely for fixation, which is very traumatic. On the other hand, since the needle exit point is the route of the digital artery, vein and nerve, it is easy to cause blood vessel and nerve loss.

[0005] The method of inserting Kirschner wires longitudinally through the interphalangeal joints can meet the needs of correcting flexor tendon contractures. However, this method requires penetrating the interphalangeal joints, which causes great damage to the interphalangeal joints. Figure 2 The Kirschner wire is inserted from the distal end of the finger, along the axial direction, and then penetrates the joint surface, and ends at the proximal end of the finger.

[0006] Therefore, for patients with overall flexor tendon contracture caused by hemangioma and other reasons, a suitable corrector with less risk and faster recovery is needed. Summary of the invention

[0007] An object of the present invention is to provide a finger orthosis suitable for the correction of vascular malformation combined with contracture deformity.

[0008] Another object of the present invention is to provide a finger orthosis to reduce damage to interphalangeal joints, blood vessels and nerves.

[0009] A finger orthosis, comprising:

[0010] a sheath, which is worn on the outside of the palm;

[0011] The correction bracket includes a finger fixing seat and a finger connecting piece, wherein the main part of the finger connecting piece (such as a Kirschner wire) is located inside the phalanx, and both ends are exposed outside the finger and are respectively assembled with the finger fixing seat, and are arranged radially along the phalanx;

[0012] The joint bracket includes a connecting arm and a suspension arm. The suspension arm is arranged on the connecting arm so that the connecting arm is suspended in the air. The fixing seat is movably connected with the connecting arm and first moves along the axial direction of the connecting arm according to the length of the phalanx or the corrected force position and then locks the fixing seat.

[0013] The traction mechanism is assembled with the protective cover and placed on the back of the hand, and includes a traction seat and a traction piece. At least one relaxation retaining piece is arranged on the traction seat and assembled with the traction piece to maintain the relaxation state of the traction piece. The traction piece contacts each joint bracket (such as a suspension arm), one end of which is fixed on the joint bracket at the distal end of the finger, and the other end is arranged on the traction seat. A force is applied to the traction piece to adjust its relaxation state and correct the finger with flexor tendon contracture.

[0014] The finger orthosis of the present invention has at least two joint brackets on the same finger, each joint bracket is equipped with at least one correction bracket, and each correction bracket is fixed on a phalanx.

[0015] The finger orthosis of the present invention also includes a pulling adjustment mechanism, which is arranged on the fixing seat and is used to adjust the tension and relaxation state of the pulling member, such as: assembling with the tension and relaxation retaining member to fix the deformation state of the pulling member. It includes a locking member, an adjustment operation key and a tension and relaxation adjusting member. The locking member contacts the tension and relaxation adjusting member and applies a force to it to make it shift toward the back of the hand, and assembles with the tension and relaxation retaining member (such as: shaft hole assembly or mortise and tenon assembly), so that the deformation of the pulling member caused by the force can be fixed and its tension and relaxation state can also be maintained.

[0016] A plurality of assembly holes are provided on the tension adjusting member to improve the adjustability of the tensioning state of the pulling member. For example, a plurality of assembly holes are provided at the edge of the tension adjusting member. After the tension adjusting member is rotated at various angles or displaced, the assembly holes are assembled with the tension retaining member accordingly to achieve the purpose of adjusting the tensioning state of the pulling member.

[0017] The adjustment operation key is installed on the pulling seat, and the tension adjustment member and the locking member are respectively assembled with the adjustment operation key and slide relatively along the adjustment operation key. During the sliding process, the tension adjustment member approaches the locking member and presses the locking member, causing it to undergo elastic deformation, and the tension retaining member disengages from the assembly hole; the tension adjustment member is subjected to the reaction force of the locking member and slides away from the locking member, and the tension retaining member is reassembled with the assembly hole, and at the same time, the pulling member is pressed under the tension adjustment member, so that the tensioned state of the pulling member is maintained.

[0018] At least one tension retaining member is provided on the pulling mechanism, or a plurality of tension retaining members, for example, five, corresponding to the number of five fingers, each tension retaining member is bound to one pulling member, and correction is performed accordingly on each finger.

[0019] At least one joint bracket is assembled with the pulling mechanism, specifically, assembled on the pulling seat. During assembly, one end of the connecting arm has a curved surface (such as a spherical surface) that contacts the assembly cavity surface on the pulling mechanism, thereby providing a degree of freedom for the rotation of the joint bracket, facilitating the application of different patients and adapting to the joint state of the connection between the finger and the palm.

[0020] The finger orthosis of the present invention is also provided with a fastener, such as a top screw, which is assembled on the finger fixing seat to firmly fix the two ends of the finger connecting member (such as a Kirschner wire).

[0021] Beneficial effects achieved by the technical solution of the present invention:

[0022] The finger orthosis provided by the present invention provides another option for correcting finger contracture deformities complicated by vascular malformations. Compared with existing fixed stents, the intensity and time of surgery are significantly reduced, that is, the joint surface is not injured, and the blood vessels and nerves under the skin of the fingers are not easily damaged, thereby reducing or avoiding the risk of bleeding and nerve contact causing disability.

[0023] The finger orthosis provided by the present invention changes the technical solution of the existing fixed bracket for correcting finger contracture deformity complicated by vascular malformation, not only changes the insertion angle and direction of the Kirschner wire, but also significantly reduces the usage of the Kirschner wire, and significantly reduces the damage caused by the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A clinical photo showing the use of existing fixed stents to correct finger contracture deformities associated with vascular malformations;

[0025] Figure 2 CT images of existing fixed stents used to correct finger contracture deformities associated with vascular malformations;

[0026] Figure 3 is a schematic diagram of an embodiment of a finger orthosis of the present invention;

[0027] Figure 4 for Figure 3 An enlarged schematic diagram of a portion of the finger orthosis shown;

[0028] Figure 5 for Figure 3 An enlarged schematic diagram of another part of the finger orthosis shown;

[0029] Figure 6 for Figure 5 A schematic diagram of the part shown from another angle;

[0030] Figure 7 for Figure 3 A schematic diagram of the finger orthosis shown at another angle;

[0031] Figure 8 for Figure 7 A cross-sectional view of a portion of the finger orthosis shown;

[0032] Fig. 9 is a schematic diagram of another embodiment of the finger orthosis of the present invention;

[0033] Fig.10 for Fig. 9 A schematic diagram of an embodiment of a finger orthosis worn on a palm is shown;

[0034] Fig.11 FIG. 4 is a schematic diagram of another embodiment of a correction bracket used in the present invention. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is described in detail below with reference to the accompanying drawings. The embodiments of the present invention are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

[0036] Figure 3 is a schematic diagram of an embodiment of a finger orthosis of the present invention, Figure 4 for Figure 3 The enlarged schematic diagram of a part of the finger orthosis shown, Figure 5 for Figure 3 The enlarged schematic diagram of another part of the finger orthosis shown, Figure 6 for Figure 5 Another angle diagram of the part shown. Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the finger orthosis of this embodiment includes a sheath 100, which is worn on the outside of the palm when in use, and includes a first wearing member 110 and a second wearing member 120. The first wearing member 110 is worn at the rear end (i.e., the proximal end) of the palm, and the second wearing member 120 is worn at the front end (i.e., the distal end) of the palm, so as to enhance the force applied to the finger orthosis during use and improve the stability of the orthosis.

[0037] The pulling mechanism 200 is assembled with the sheath 100 and placed on the back of the hand, and includes a pulling seat 210 and a pulling member 220. The first wearing member 110 and the second wearing member 120 are respectively arranged at the rear end (i.e., the proximal end) and the front end (i.e., the distal end) of the pulling seat 210. After the first wearing member 110 and the second wearing member 120 are worn on the palm, the pulling seat 210 can remain stable on the back of the hand to avoid flipping or shifting after being subjected to force. At least one tension retaining member 300 is provided on the pulling seat 210, and one end of the pulling member 210 is fixed to the distal end of the finger. The tensioned state of the pulling member is adjusted so that after the finger is subjected to the required force, the other end is assembled (e.g., tied) on the tension retaining member 300, so that the tensioned state of the pulling member 220 can be maintained.

[0038] At least one tension retaining member 300 is provided on the pulling mechanism 200, or a plurality of tension retaining members 300, for example, five, corresponding to the number of five fingers, each tension retaining member is bound to one pulling member, and correction is performed accordingly for each finger.

[0039] The pulling member 220 is also in contact with each joint support 500, for example, one end of the pulling member 220 is fixed to the joint support 500 at the distal end of the finger, and then each joint support 500 is connected in series in sequence toward the rear end of the palm. When the pulling member 220 is subjected to force, the height position and angle position of the joint support 500 are adjusted from the distal end of the finger, thereby causing the spatial posture of each joint support 500 connected in series to change accordingly, thereby achieving the purpose of correcting the contracture deformity caused by vascular malformation. Applying force to the pulling member 220 can also adjust its tension and relaxation state, thereby arranging the height position and angle position of each joint support 500 according to the actual situation of the patient, and applying appropriate corrective force to the finger with flexor tendon contracture, thereby shortening the recovery time after hemangioma resection surgery.

[0040] The joint support 500 includes a connecting arm 510 and a suspension arm 520. The suspension arm 520 is arranged on the connecting arm 510 so that the connecting arm 510 is suspended. The correction support 600 is movably connected to the connecting arm 510 and first moves along the axial direction of the connecting arm 510 according to the length of the phalanges or the correction force position and then is locked to the connecting arm 510. For example, a slide groove is arranged on the connecting arm 510, and one end of the correction support 600 is assembled with the slide groove and slides in the slide groove. When the position is suitable for the length of the phalanges or the correction force position, the correction support 600 is locked and fixed to the slide groove, and the relative position of the connecting arm 510 and the correction support 600 is maintained.

[0041] For example, a plurality of adjustment holes 511 are provided on the connecting arm 510, which are arranged along the axial direction of the connecting arm 510. According to the length of the phalanges or the position of the force to be corrected, the connecting arm 510 is fixed in one of the adjustment holes 511 accordingly, so that the relative position between the connecting arm 510 and the correction bracket 600 can be maintained. One end of the pulling member 220 is fixed to the suspension arm 520 at the distal end of the finger, and then each suspension arm 520 is connected in series in sequence toward the rear end of the palm, thereby connecting each joint bracket 500 in series, so as to adjust the height position and angle position of the joint bracket 500, and then make the spatial posture of each joint bracket 500 connected in series change accordingly, so as to achieve the purpose of correcting the contracture deformity caused by hemangioma / venous malformation.

[0042] At least one joint support 500 is assembled with the tensioning mechanism 200 . Figure 8 for Figure 7 A partial cross-sectional view of the finger orthosis shown in FIG. Figure 8 As shown, the joint bracket 500 is assembled on the traction seat 210. During assembly, one end of the connecting arm 510 has a curved surface 512 (e.g., a spherical surface) that contacts the assembly cavity surface on the traction mechanism 200, thereby providing a degree of freedom for the rotation of the joint bracket, facilitating the application of different patients and adapting to the joint state of the connection between the finger and the palm.

[0043] The number of joint brackets 500 used in the finger orthosis of the present invention should be determined according to the finger to be corrected. For example, the thumb has two phalanges and one joint, so two joint brackets are needed. The joint brackets are hinged to simulate the bending of the joints. At least one correction bracket 600 is assembled on each joint bracket 500, and each correction bracket 600 is connected to a phalange.

[0044] Fig. 9 is a schematic diagram of another embodiment of the finger orthosis of the present invention, Fig.10 for Fig. 9 The finger orthosis shown is a schematic diagram of an embodiment of wearing the finger orthosis on the palm. Fig. 9 and Fig.10 As shown, when correction is required for multiple fingers, a correction bracket 600 and a joint bracket 500 connected thereto are provided on the corresponding phalanges of each finger. A pulling member 220 is also provided for each finger to connect the joint brackets 500 correspondingly mounted on each finger in series, so as to adjust the height position and angle position of the joint brackets 500 mounted on a single finger, thereby causing the spatial posture of the joint brackets 500 connected in series to change accordingly, so as to correct the contracture deformity of each finger caused by hemangioma / venous malformation.

[0045] The correction bracket 600 includes a finger fixing seat 610 and a finger connecting member 620. The main part of the finger connecting member 620 (such as a Kirschner wire) is located in the phalanx, and the two ends are exposed outside the finger and are respectively assembled with the finger fixing seat 610, and are arranged along the radial direction of the phalanx, so that the phalanx is firmly connected to the correction bracket 600. The finger fixing seat 610 is assembled with the connecting arm 510, so that the relative position of the connecting arm 510 and the correction bracket 600 is maintained. Under the action of the pulling member 220, the correction bracket 600 pulls the phalanx, so that the bent finger presents a straight posture change, so as to achieve the purpose of correcting the contracture deformity caused by vascular malformation.

[0046] A fastener 700, such as a top screw, is also provided, which is assembled on the finger fixing seat 610 to firmly fix the two ends of the finger connector 620 (such as a Kirschner wire) to prevent deviation or slippage after being subjected to external force, and to facilitate the radial arrangement of the finger connector 620, the application of external force, and the correction of finger traction contracture deformity. Figure 4 In the embodiment, the finger connector 620 is in the shape of a rod and is assembled with the finger fixing seat 610 in a straight manner, such as an axial hole assembly. The fasteners 700 are respectively arranged at both ends of the finger connector 620 and assembled with the finger fixing seat 610.

[0047] Fig.11 FIG. 1 is a schematic diagram of another embodiment of a correction bracket used in the present invention. Fig.11 As shown, the middle section of the finger connector 620 is straight, which follows the radial arrangement of the phalanges. The two ends outside the finger are bent toward the suspension arm 520 and are assembled and fixed on the finger fixing seat 610. The fastener 700 is also installed at the assembly to prevent deviation or slippage after being subjected to external force.

[0048] A pulling adjustment mechanism 800 is also provided on the pulling seat 210 . Figure 7 for Figure 3 A schematic diagram of the finger orthosis from another angle is shown. Figure 8 for Figure 7 A partial cross-sectional view of the finger orthosis shown. Figure 7 and Figure 8 As shown, the pulling adjustment mechanism 800 includes a locking member 810, an adjustment operation key 820 and a tension adjustment member 830. The locking member 810 contacts the tension adjustment member 830 and applies a force thereto, causing it to shift toward the back of the hand and be assembled with the tension retaining member 300 (for example: shaft hole assembly or mortise and tenon assembly), and the pulling member 220 is pressed under the tension adjustment member 830 to maintain its relaxed state.

[0049] A plurality of assembly holes are provided on the tension adjusting member 830 to improve the adjustability of the tensioning state of the pulling member 220. For example, a plurality of assembly holes 831 are provided at the edge of the tension adjusting member 830. After the tension adjusting member 830 is rotated at various angles or displaced, the assembly holes 831 are assembled with the tension retaining member 300 accordingly, thereby achieving the purpose of adjusting the tensioning state of the pulling member 220.

[0050] The locking member 810 is an elastic member, such as a spring. The adjustment operation key 820 is installed on the pulling seat 210. The tension adjustment member 830 and the locking member 810 are respectively assembled with the adjustment operation key 820 and slide relatively along the adjustment operation key 820. During the sliding process, the tension adjustment member 830 approaches or moves away from the locking member 810. When the tension adjustment member 830 approaches the locking member 810, the locking member 810 is pressed to cause elastic deformation. At the same time, the tension retaining member 300 is disengaged from the assembly hole 831, and the tension adjustment member 830 is rotated / moved to change the force acting on the pulling member 200, thereby changing the tension state of the pulling member 220. When the tension adjusting member 830 is away from the locking member 810, the tension retaining member 300 is reassembled with the assembly hole 831, and the tension adjusting member 830 is subjected to the force of restoring the deformation of the locking member 810, and the pulling member 220 is pressed under the tension adjusting member 830 (i.e., between the tension adjusting member 830 and the pulling seat 210) to maintain its tension state. In this way, under the action of the pulling member 220, the correction bracket 600 pulls the phalanges, so that the force required for the bent finger to be straightened is maintained, or the correction force applied to the finger is adjusted according to the recovery situation, so as to achieve the purpose of correcting the contracture deformity caused by vascular malformation.

[0051] At least one pulling adjustment mechanism 800 is arranged on the pulling mechanism 200, or a plurality of pulling adjustment mechanisms 800 are arranged, for example, 5 pulling adjustment mechanisms 800, corresponding to the number of 5 fingers. Each pulling adjustment mechanism 800 adjusts and maintains the tensioned and relaxed state of a pulling member 220, thereby implementing corresponding correction for each finger.

Claims

1. A finger orthosis, characterized in that include: a sheath, which is worn on the outside of the palm; The correction bracket includes a finger fixing seat and a finger connecting piece, wherein the main part of the finger connecting piece is located in the phalanx, and the two ends are exposed outside the finger and are respectively assembled with the finger fixing seat and arranged radially along the phalanx; The joint bracket comprises a connecting arm and a suspension arm, wherein the suspension arm is arranged on the connecting arm so that the connecting arm is suspended in the air, and the fixing seat is movably connected with the connecting arm and first moves along the axial direction of the connecting arm according to the length of the phalanx or the corrected force position and then locks the fixing seat; The traction mechanism is assembled with the protective cover and placed on the back of the hand, and includes a traction seat and a traction piece. At least one relaxation retaining piece is arranged on the traction seat and assembled with the traction piece to maintain the relaxation state of the traction piece. The traction piece contacts each joint bracket, one end of which is fixed on the joint bracket at the distal end of the finger, and the other end is arranged on the traction seat. A force is applied to the traction piece to adjust its relaxation state and correct the finger with flexor tendon contracture.

2. The finger orthosis according to claim 1, characterized in that At least two joint brackets are provided on the same finger, each joint bracket is equipped with at least one correction bracket, and each correction bracket is fixed on a phalanx.

3. The finger orthosis according to claim 1, characterized in that The finger connector is a Kirschner wire.

4. The finger orthosis according to claim 1, characterized in that It also includes a pulling adjustment mechanism, which is arranged on the fixing seat and is used to adjust the tension and relaxation state of the pulling member.

5. The finger orthosis according to claim 4, characterized in that The pulling adjustment mechanism is assembled with the tension retaining member to fix the deformation state of the pulling member.

6. The finger orthosis according to claim 4, characterized in that The pulling adjustment mechanism includes a locking member, an adjustment operation key and a tension adjustment member. The locking member contacts the tension adjustment member and applies force to it to shift it toward the back of the hand and is assembled with the tension retaining member to maintain the tensioned state of the pulling member.

7. The finger orthosis according to claim 6, characterized in that A plurality of assembly holes are arranged on the tension adjusting member, and after the tension adjusting member is rotated at various angles or displacements, the assembly holes are assembled with the tension retaining member accordingly, so as to achieve the purpose of adjusting the tension state of the pulling member.

8. The finger orthosis according to claim 6, characterized in that The adjustment operation key is installed on the pulling seat, and the tension adjustment member and the locking member are respectively assembled with the adjustment operation key and slide relatively along the adjustment operation key. During the sliding process, the tension adjustment member approaches the locking member and presses the locking member, causing it to undergo elastic deformation, and the tension retaining member disengages from the assembly hole; the tension adjustment member is subjected to the reaction force of the locking member and slides away from the locking member, and the tension retaining member is reassembled with the assembly hole, and at the same time, the pulling member is pressed under the tension adjustment member, so that the tensioned state of the pulling member is maintained.

9. The finger orthosis according to claim 1, characterized in that At least one of the joint brackets is assembled with the pulling mechanism, and one end of the connecting arm has a curved surface that contacts with the assembly cavity surface on the pulling mechanism, thereby providing a degree of freedom for the rotation of the joint bracket.

10. The finger orthosis according to claim 1, characterized in that A fastener is also provided and assembled on the finger fixing seat to firmly fix the two ends of the finger connecting piece.

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