CN211534740U

CN211534740U - External fixing unit and external fixer for hands and feet

Info

Publication number: CN211534740U
Application number: CN201922044224.3U
Authority: CN
Inventors: 杨华清; 田林; 成江涛; 徐步青; 徐栋立; 曲龙
Original assignee: Changzhou Holymed Medical Technology Co ltd
Current assignee: Changzhou Holymed Medical Technology Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-09-22
Anticipated expiration: 2029-11-22

Abstract

The utility model belongs to the technical field of the medical instrument technique and specifically relates to an external fixation unit and external fixer of brothers thereof, it adopts and integrates packing ring and clamping piece on the mounting entirely, and set up the through-hole in the mounting, form movable cooperation with the connecting piece with this, realize that external fixation unit wholly can carry out axial position along the mounting and adjust, and can freely adjust the installation angle of spicule in the centre gripping groove along the circumference of mounting, through freely increasing and decreasing the quantity of packing ring, can freely select the quantity of required fixed spicule as required, can fix more quantity of spicules simultaneously, thereby can make up different spicule fixing schemes, the flexibility is strong, cooperate crooked spicule, can form similar claw structure, realize having firm holding power; the structure is very simple and compact, the use is convenient, and the operation time can be greatly shortened; the volume is small, and the interference of the postoperative external fixing unit on the hand movement can be reduced; the cost is low, and the economic burden of patients is effectively reduced.

Description

External fixing unit and external fixer for hands and feet

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to an external fixation unit, in addition the utility model discloses still relate to an external fixer of brothers including above-mentioned external fixation unit.

Background

Fracture refers to the continuous complete or partial fracture of bone structure, which is often seen in children and the elderly, and also occurs in middle and young people, and patients often have fracture at one position, and a few have multiple fractures, and after timely and proper treatment, most patients can recover the original functions, and a few patients can leave sequela with different degrees;

aiming at the treatment of the fracture of the hand and the foot, the traditional treatment scheme usually adopts built-in steel plates for fixation, and the built-in difficulty of the steel plates is large, the operation time is long, the wound surface is large due to the tiny anatomical structures of the hand and the foot, and the fracture of a patient needs to be treated again to take out the steel plates, so that the economic burden and the pain of the patient are obviously brought; in view of the above, an external fixator for treating hand and foot fractures appears in the prior art to reduce the difficulty of the operation and improve the treatment effect, for example, an external fixator for correcting leg and leg patella fracture deformity in chinese patent document medical use disclosed in CN201510804458.7, which mainly comprises a T-shaped steel pin fixing block, a fixing screw, a square screw, a rectangular steel pin fixing block, a right angle steel pin fixing block, a long connecting member, a concave steel pin fixing block, and a plurality of pin fixing bodies, and the fixing block for fixing the pins needs to be fixed with the long connecting member by the pin fixing body, resulting in a large volume of the whole external fixator, which is not beneficial to the movement of the hand after the external fixator is fixed, and the number of required parts is extremely large, which not only increases the cost, but also increases the difficulty and complexity of the operation of a doctor during the operation.

In view of this, the present invention is directed to provide an external fixator which has a simple structure, a small volume, and is portable, firm and fast in fixation.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problem that its structure of external fixator is complicated among the prior art, with high costs, the operation degree of difficulty and the complexity are big when doctor operates, provide an external fixation unit at present, in addition the utility model provides an external fixator of brothers and feet including above-mentioned external fixation unit, it is applicable in that fracture of hands and feet is fixed, incomplete finger extension, short finger extension, restoration bone is defective, the correction of bent finger deformity reaches and indicates deformity correction etc..

The utility model provides a technical scheme that its technical problem adopted is: an external fixation unit comprising:

the fixing piece is provided with a through hole which is sleeved on the connecting piece, so that the fixing piece can axially displace along the connecting piece;

the locking mechanism is used for fixing the fixing piece on the connecting piece;

at least one gasket which is arranged on the fixed piece in a sliding way;

the two clamping pieces are respectively a first clamping piece and a second clamping piece and are respectively arranged at two ends of the fixing piece, all the gaskets are positioned between the first clamping piece and the second clamping piece, clamping grooves for clamping the spicules can be formed between the first clamping piece and the adjacent gaskets, between the adjacent gaskets and between the second clamping piece and the adjacent gaskets, and the first clamping piece and the second clamping piece can be axially displaced relatively and can be locked on the fixing piece so as to clamp the spicules in all the clamping grooves at the same time.

According to the scheme, the washer and the clamping piece are integrated on the fixing piece, the through hole is formed in the fixing piece, and the through hole and the connecting piece are movably matched, so that the whole external fixing unit can be axially adjusted along the fixing piece, the mounting angle of bone pins in the clamping groove can be freely adjusted along the circumferential direction of the fixing piece, the quantity of the washers can be freely increased or decreased, the quantity of the bone pins to be fixed can be freely selected according to needs, and a large number of bone pins can be fixed at the same time, so that different bone pin fixing schemes can be combined, the flexibility is high, a structure similar to an eagle claw can be formed by matching the bent bone pins, and firm holding force is realized; the structure is very simple and compact, the use is convenient, and the operation time can be greatly shortened; the volume is small, and the interference of the postoperative external fixing unit on the hand movement can be reduced; the cost is low, and the economic burden of patients is effectively reduced.

Furthermore, one side of the clamping groove is provided with a positioning groove for positioning a spicule; the fixing effect of the clamping groove on the spicules can be improved through the arrangement of the positioning groove, and the spicules are prevented from radially deviating.

Specifically, the cross section of the positioning groove is V-shaped or arc-shaped.

Furthermore, one side of each gasket is provided with the positioning groove; through only seting up a constant head tank on every packing ring, only having one in every centre gripping groove that can realize forming between the packing ring and be used for the card to establish the constant head tank of spicule to through corresponding rotation packing ring, realize that every spicule all can carry out circumference angle modulation around following the mounting alone, improve flexibility and the convenience of using.

Furthermore, one side of the first clamping piece, which is close to the gasket, is also provided with the positioning groove, and the bone pins in the clamping grooves where the first clamping piece is located can be circumferentially angularly adjusted around the fixing piece by integrally rotating the fixing piece.

Furthermore, a notch is formed in the peripheral surface of the gasket; the provision of the notches provides a point of force to rotate the washer.

Further, the outer peripheral surface of the fixing member is provided with external threads, the first clamping member and the fixing member are integrally formed or in threaded connection with the fixing member, and the second clamping member is in threaded connection with the fixing member.

Further, inner holes are formed in the gaskets, and the inner holes are sleeved on the fixing pieces.

Furthermore, a gasket is arranged on the side surface of one side, close to the gasket, of the second clamping piece, and the gasket is sleeved on the fixing piece; because the position of fixing the spicule on the washer is close to the edge of the washer, if the second clamping piece directly adopts the nut, the contact surface of the second clamping piece and the spicule is small, and therefore, the arrangement of the washer can ensure that the second clamping piece can firmly clamp the spicule.

Further, the gasket is integrally formed with the second clamping member.

Furthermore, the locking mechanism comprises two limiting nuts in threaded connection with the connecting piece, and the first clamping piece, the washer and the second clamping piece are all positioned between the two limiting nuts; through loosening the stop nut at mounting both ends, can adjust the circumference position of external fixation unit on the connecting piece to after adjusting, through screwing up stop nut, alright quick fix the external fixation unit on the connecting piece.

Further, a locking screw is connected to the first clamping piece in a threaded manner along the radial direction, and the end part of the threaded end of the locking screw is used for abutting against the connecting piece; the stability of the external fixing unit on the connecting piece can be improved by utilizing the arrangement of the locking screws, and the external fixing unit is prevented from circumferential deflection.

The utility model also provides a brothers external fixation ware, including connecting piece and at least one external fixation unit, the external fixation unit is with foretell external fixation unit, the external fixation unit configuration is on the connecting piece.

Further, the connecting piece adopts a screw rod.

Furthermore, the outer peripheral surface of the screw is provided with an abutting plane along the axis direction.

The utility model has the advantages that: the utility model discloses an external fixation unit adopts and all integrates packing ring and clamping piece on the mounting, and set up the through-hole in the mounting, form movable cooperation with the connecting piece with this, realize that external fixation unit is whole can carry out axial position along the mounting and adjust, and can freely adjust the installation angle of spicule in the centre gripping groove along the circumference of mounting, through the quantity that freely increases and decreases the packing ring, can freely select the quantity of required fixed spicule as required, can fix more quantity of spicule simultaneously, thereby can make up out different spicule fixing schemes, the flexibility is strong, cooperate crooked spicule, can form similar eagle claw structure, realize having firm holding power; the structure is very simple and compact, the use is convenient, and the operation time can be greatly shortened; the volume is small, and the interference of the postoperative external fixing unit on the hand movement can be reduced; the cost is low, and the economic burden of patients is effectively reduced.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is an exploded view of the external fixation unit of the present invention;

fig. 2 is a three-dimensional schematic view of the external fixation unit of the present invention;

fig. 3 is a schematic top view of the external fixing unit of the present invention;

fig. 4 is a schematic sectional view of the external fixing unit of the present invention;

fig. 5 is a three-dimensional schematic view of the external fixator of the hand and foot of the present invention;

fig. 6 is a three-dimensional schematic view of the finger bone fixed by the external fixator of hand and foot of the present invention.

In the figure: 1. the external fixing unit comprises 101, a fixing piece, 1011, a through hole, 102, a gasket, 1021, a notch, 1022, an inner hole, 103, a first clamping piece, 104, a second clamping piece, 105, a clamping groove, 106, a positioning groove, 107, a gasket, 108, a locking screw, 109 and a limiting nut;

2. a bone needle;

3. connector, 301, abutting plane.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the invention only in a schematic way, and thus show only the components that are relevant to the invention, and the directions and references (e.g., upper, lower, left, right, etc.) may be used only to help describe the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.

Example 1

As shown in fig. 1 to 4, an external fixation unit includes:

the fixing piece 101 is provided with a through hole 1011 for being sleeved on the connecting piece 3, so that the fixing piece 101 can axially displace along the connecting piece 3;

a locking mechanism for fixing the fixing member 101 to the connecting member 3;

at least one washer 102, which is slidably disposed on the fixing member 101;

and two clamping pieces which are respectively a first clamping piece 103 and a second clamping piece 104 and are respectively arranged at two ends of the fixing piece 101, all the gaskets 102 are positioned between the first clamping piece 103 and the second clamping piece 104, clamping grooves 105 for clamping the bone pins 2 can be formed between the first clamping piece 103 and the adjacent gasket 102, between the two adjacent gaskets 102 and between the second clamping piece 104 and the adjacent gasket 102, and the first clamping piece 103 and the second clamping piece 104 can be relatively axially displaced and can be locked on the fixing piece 101, so that the bone pins 2 in all the clamping grooves 105 can be simultaneously clamped.

One side of the clamping groove 105 is provided with a positioning groove 106 for positioning the spicule 2; the fixing effect of the clamping groove 105 on the spicule 2 can be improved through the arrangement of the positioning groove 106, and the spicule 2 is prevented from radially deviating.

The cross section of the positioning groove 106 is V-shaped or arc-shaped.

One side of each gasket 102 is provided with the positioning groove 106; by arranging only one positioning groove 106 on each gasket 102, only one positioning groove 106 for clamping the spicules 2 exists in each clamping groove 105 formed between the gaskets 102, so that the spicules 2 can be independently adjusted in circumferential angle along the fixing piece 101 by correspondingly rotating the gaskets 102, and the use flexibility and convenience are improved.

The side of the first clamping member 103 close to the washer 102 is also provided with the positioning slot 106, and circumferential angle adjustment of the spicule 2 in the clamping slot 105 where the first clamping member 103 is located around the fixing member 101 can be realized by integrally rotating the fixing member 101.

A notch 1021 is formed in the outer peripheral surface of the gasket 102; the provision of the notch 1021 provides a point of force to rotate the washer 102.

The outer circumferential surface of the fixing member 101 has external threads, the first clamping member 103 is integrally formed with the fixing member 101 or is screwed on the fixing member 101, and the second clamping member 104 is screwed on the fixing member 101; that is, the first clamping member 103 may be fixed to the fixing member 101 by means of a screw connection; the first clamping member 103 and the fixing member 101 may be integrally formed, and actually, the integrally formed first clamping member 103 and the fixing member 101 are combined together to form a bolt structure; the second clamping member 104 may specifically also be a nut.

The washers 102 are all provided with inner holes 1022, and the inner holes 1022 are sleeved on the fixing member 101.

A gasket 107 is arranged on the side surface of the second clamping piece 104 close to the washer 102, and the gasket 107 is sleeved on the fixing piece 101; since the washer 102 is located close to the edge of the bone pin 2, if the second clamping member 104 is directly provided with a nut, the contact surface of the second clamping member 104 with the bone pin 2 is small, and therefore, the second clamping member 104 can be ensured to firmly clamp the bone pin 2 through the arrangement of the washer 107.

In this embodiment, the spacer 107 and the second clamping member 104 may be integrally formed, or may be separately disposed.

The locking mechanism comprises two limiting nuts 109 in threaded connection with the connecting piece 3, and the first clamping piece 103, the washer 102 and the second clamping piece 104 are all positioned between the two limiting nuts 109; by loosening the limit nuts 109 at both ends of the fixing member 101, the circumferential position of the external fixing unit 1 can be adjusted on the connecting member 3, and after adjustment, by tightening the limit nuts 109, the external fixing unit 1 can be quickly fixed on the connecting member 3.

A locking screw 108 is connected to the first clamping member 103 along the radial direction in a threaded manner, and the end of the threaded end of the locking screw 108 is used for abutting against the connecting member 3; the stability of the external fixation unit 1 on the connection element 3 can be improved by the arrangement of the locking screw 108, which prevents the external fixation unit 1 from deflecting in the circumferential direction.

In the embodiment, the washer 102 and the clamping member are integrated on the fixing member 101, and the through hole 1011 is formed in the fixing member 101, so that the fixing member 3 can be movably matched with the through hole, the whole external fixing unit 1 can be axially adjusted along the fixing member 101, the installation angle of the spicules 2 in the clamping groove 105 can be freely adjusted along the circumferential direction of the fixing member 101, the number of the required fixing spicules 2 can be freely selected according to the requirement by freely increasing or decreasing the number of the washers 102, a large number of the spicules 2 can be simultaneously fixed, different fixing schemes of the spicules 2 can be combined, the flexibility is strong, a structure similar to an eagle claw can be formed by matching the bent spicules 2, and firm holding force is realized; the structure is very simple and compact, the use is convenient, and the operation time can be greatly shortened; the volume is small, and the interference of the postoperative external fixation unit 1 on the hand movement can be reduced; the cost is low, and the economic burden of patients is effectively reduced.

Example 2

As shown in fig. 5 and 6, an external fixator for hands and feet comprises a connecting piece 3 and at least one external fixing unit 1, wherein the external fixing unit 1 adopts the external fixing unit 1 in embodiment 1, and the external fixing unit 1 is configured on the connecting piece 3; in the present embodiment, two external fixing units 1 may be used on the connecting member 3.

The connecting piece 3 adopts a screw rod.

The butt plane 301 has been seted up along its axis direction to the outer peripheral face of screw rod to form the cooperation with the thread end tip of locking screw 108, make its thread end tip can support on the butt plane 301 of screw rod when screwing up of locking screw 108, thereby improve the stability of external fixation unit 1 on connecting piece 3, avoid fixed back external fixation unit 1 to take place to deflect, also can avoid when stop nut 109 loosens, external fixation unit 1 takes place the circumference to deflect relative to connecting piece 3, make external fixation unit 1 only have the degree of freedom of following the upward removal of connecting piece 3 axial direction.

When the bone pin fixing device is used, the positions of the two outer fixing units 1 on the connecting piece 3 can be adjusted by screwing the limiting nut 109, so that a doctor can select a specific fixing scheme of the bone pin 2 to a phalanx, and after the bone pin 2 is fixed, the second clamping piece 104 is locked, so that the bone pin 2 in the clamping groove 105 is clamped, and the bone pin 2 is clamped in the corresponding positioning groove 106; after the spicules 2 on the external fixing units 1 are fixed, the two external fixing units 1 can be separated from or drawn close to each other by screwing the limiting nuts 109, so that the two external fixing units 1 can form certain tension or pressing force on phalanges.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An external fixation unit, characterized in that: the method comprises the following steps:

the fixing piece (101) is provided with a through hole (1011) which is sleeved on the connecting piece (3) so that the fixing piece (101) can axially displace along the connecting piece (3);

a locking mechanism for fixing the fixing member (101) to the connecting member (3);

at least one gasket (102) which is arranged on the fixing piece (101) in a sliding way;

and the two clamping pieces are respectively a first clamping piece (103) and a second clamping piece (104) and are respectively arranged at two ends of the fixing piece (101), all the gaskets (102) are positioned between the first clamping piece (103) and the second clamping piece (104), clamping grooves (105) for clamping the bone pins (2) can be formed between the first clamping piece (103) and the gasket (102) adjacent to the first clamping piece, between two adjacent gaskets (102) and between the second clamping piece (104) and the gasket (102) adjacent to the second clamping piece, and the first clamping piece (103) and the second clamping piece (104) can be axially displaced relatively and can be locked on the fixing piece (101), so that the bone pins (2) in all the clamping grooves (105) can be clamped simultaneously.

2. The external fixation unit of claim 1, wherein: one side of the clamping groove (105) is provided with a positioning groove (106) for positioning the spicule (2).

3. An external fixation unit as claimed in claim 2, wherein: the cross section of the positioning groove (106) is V-shaped or arc-shaped.

4. An external fixation unit as claimed in claim 2, wherein: one side of each gasket (102) is provided with the positioning groove (106).

5. An external fixation unit as claimed in claim 4, wherein: one side of the first clamping piece (103) close to the gasket (102) is also provided with the positioning groove (106).

6. An external fixation unit as claimed in claim 2, wherein: the outer circumferential surface of the gasket (102) is provided with a notch (1021).

7. The external fixation unit of claim 1, wherein: the outer peripheral surface of the fixing part (101) is provided with external threads, the first clamping part (103) and the fixing part (101) are integrally formed or are in threaded connection with the fixing part (101), and the second clamping part (104) is in threaded connection with the fixing part (101).

8. An external fixation unit as claimed in claim 7, wherein: inner holes (1022) are formed in the gaskets (102), and the inner holes (1022) are sleeved on the fixing piece (101).

9. An external fixation unit as claimed in claim 7, wherein: a side face, close to the washer (102), of the second clamping piece (104) is provided with a gasket (107), and the gasket (107) is sleeved on the fixing piece (101).

10. An external fixation unit as claimed in claim 9, wherein: the spacer (107) is integrally formed with the second clamping member (104).

11. The external fixation unit of claim 1, wherein: the locking mechanism comprises two limiting nuts (109) in threaded connection with the connecting piece (3), and the first clamping piece (103), the washer (102) and the second clamping piece (104) are located between the two limiting nuts (109).

12. An external fixation unit as claimed in claim 1 or 11, characterized in that: a locking screw (108) is connected to the first clamping piece (103) in a threaded manner along the radial direction, and the end part of the threaded end of the locking screw (108) is used for abutting against the connecting piece (3).

13. An external fixer for hands and feet, which is characterized in that: comprising a connecting piece (3) and at least one external fixation unit (1), the external fixation unit (1) being as defined in any one of claims 1 to 12, the external fixation unit (1) being arranged on the connecting piece (3).

14. The external fixator of claim 13, wherein: the connecting piece (3) adopts a screw rod.

15. The external fixator of claim 14 wherein: the outer peripheral surface of the screw is provided with an abutting plane (301) along the axial direction.