阅读说明：本技术 外固定单元及其手足外固定器 (External fixing unit and external fixer for hands and feet ) 是由 杨华清 田林 成江涛 徐步青 徐栋立 曲龙 于 2019-11-22 设计创作，主要内容包括：本发明涉及医疗器械技术领域,尤其是一种外固定单元及其手足外固定器,其采用将垫圈及夹紧件全部集成在固定件上,并在固定件中开设通孔,以此和连接件形成可移动配合,实现外固定单元整体能够沿固定件进行轴向位置调节,并能够沿固定件的周向自由调节夹持槽中骨针的安装角度,通过自由增减垫圈的数量,可根据需要自由选择所需固定骨针的数量,能够同时固定较多数量的骨针,从而可组合出不同的骨针固定方案,灵活性强,配合弯曲的骨针,可形成类似鹰爪结构,实现具有牢固的把持力；且结构非常简单紧凑,使用方便,能够大幅度的缩减手术时间；体积小,可降低术后外固定单元对手部活动的干扰；成本低,有效降低患者的经济负担。(The invention relates to the technical field of medical instruments, in particular to an external fixing unit and a hand-foot external fixator thereof, wherein a gasket and a clamping piece are integrated on a fixing piece, and a through hole is arranged in the fixing piece so as to form movable fit with a connecting piece, so that the whole external fixing unit can be adjusted in the axial position along the fixing piece, the mounting angle of spicules in a clamping groove can be freely adjusted in the circumferential direction of the fixing piece, the quantity of the gasket can be freely increased or decreased, the quantity of the spicules to be fixed can be freely selected according to needs, and a large quantity of spicules can be fixed at the same time, so that different spicule fixing schemes can be combined, the flexibility is strong, curved spicules can be matched, a structure similar to an eagle claw can be formed; 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.)

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. An external fixation unit as claimed in 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.

Technical Field

The invention relates to the technical field of medical instruments, in particular to an external fixing unit, and further relates to a hand-foot external fixing device comprising the external fixing 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 provides an external fixator which has a simple structure, a small volume, a light weight, a firmness and a fast fixing.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to solve the problems of complex structure, high cost and large operation difficulty and complexity of the external fixator in the prior art during the operation of doctors, the invention provides an external fixing unit.

The technical scheme adopted by the invention for solving the technical problems is as follows: 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 invention also provides a hand and foot external fixator which comprises a connecting piece and at least one external fixing unit, wherein the external fixing unit is arranged 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 invention has the beneficial effects that: the external fixing unit is characterized in that the gasket 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 adjusted in the axial position along the fixing piece, the mounting angle of spicules in the clamping groove can be freely adjusted along the circumferential direction of the fixing piece, the quantity of the gaskets can be freely selected according to the requirement by freely increasing and decreasing the quantity of the gaskets, a large quantity of spicules can be fixed at the same time, different spicule fixing schemes can be combined, the flexibility is high, a structure similar to an eagle claw can be formed by matching with the bent spicules, 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.

Drawings

The invention is further illustrated with reference to the following figures and examples.

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

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

FIG. 3 is a schematic top view of the external fixation unit of the present invention;

FIG. 4 is a schematic cross-sectional view of an external fixation 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 view illustrating the fixing of the phalanges when the external fixator for hands and feet of the invention is in use.

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 diagrams illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention, and directions and references (e.g., upper, lower, left, right, etc.) may be used only to help the description of 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.