CN111317521A - Fixing device for quickly opening bone hole - Google Patents
Fixing device for quickly opening bone hole Download PDFInfo
- Publication number
- CN111317521A CN111317521A CN202010164060.2A CN202010164060A CN111317521A CN 111317521 A CN111317521 A CN 111317521A CN 202010164060 A CN202010164060 A CN 202010164060A CN 111317521 A CN111317521 A CN 111317521A
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- China
- Prior art keywords
- cam
- main body
- push rod
- movable
- section
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
Abstract
The invention discloses a bone hole rapid opening fixing device, and relates to the field of operation auxiliary fixing devices. The device includes a main body, a knob, a cam wrench, and a movable distractor. The front end of main part is equipped with the fixed body that struts, and there is the axial hole inside, and the end is equipped with the screw thread, and the knob passes through the screw thread to be installed in the main part end, and the knob is furnished with the ejector pin. The cam spanner comprises a cam part and a spanner part, wherein the cam part is arranged in a slot of the main body at the rear section of the axial hole; the movable opening body is connected with a push rod, the push rod is installed at the front section of the axial hole, the movable opening body and the fixed opening body are both provided with opening parts, and the tail sections of the opening parts are provided with tooth-shaped claws; the push rod, the cam part and the push rod are connected in sequence in the axial hole. The knob is rotated, the ejector rod pushes the cam part to move, the cam part pushes the push rod to move so as to carry the movable spreading body to spread initially, the cam part is driven to rotate from the lower dead point to the upper dead point by pulling the spanner part, and the push rod is pushed to move for a certain distance so as to further spread the movable spreading body.
Description
Technical Field
The invention relates to the field of auxiliary fixing devices for operations, in particular to a bone hole rapid opening fixing device.
Background
The surgical instrument fixing device is a surgical auxiliary device commonly used in surgical operations, and the current surgical instrument fixing device in the surgical operations is relatively complex in structure, heavy, expensive and inconvenient to operate, and has limited clinical application due to the defects.
Chinese patent No. CN109009485A discloses an auxiliary fixing device for operation, which comprises a bone hole opening fixing component, wherein the bone hole opening fixing component comprises a fixed opening body and a movable opening body, the fixed opening body is provided with a guide groove and a jackscrew, a guide arm is guided by the guide groove to be limited, and under the action of the jackscrew, the fixed opening body and the tooth-shaped claw of the movable opening body are opened.
The opening and closing of the fixed distraction body and the movable distraction body are realized through the telescopic adjustment of the guide arm, the adjustment of the guide arm needs to use a spanner, and the operation is inconvenient in clinical use.
Disclosure of Invention
The invention aims to provide a bone hole rapid opening fixing device which is flexible and adjustable and improves the use convenience aiming at the defects.
The invention specifically adopts the following technical scheme:
a bone hole rapid opening fixing device comprises a main body, a knob, a cam wrench and a movable opening body; the front end of the main body is provided with a fixed distraction body, the interior of the main body is provided with an axial hole, and the tail end of the main body is provided with a thread; the knob is arranged at the tail end of the main body through threads and is provided with a mandril; the cam spanner comprises a cam part and a spanner part, wherein the cam part is arranged in a main body groove at the rear section of the axial hole; the movable opening body is connected with a push rod, the push rod is installed at the front section of the axial hole, the movable opening body and the fixed opening body are both provided with opening parts, and the tail sections of the opening parts are provided with tooth-shaped claws; the ejector rod, the cam part and the push rod are connected in sequence in the axial hole; the knob is rotated, the ejector rod pushes the cam part to move, the cam part pushes the push rod to move so as to carry the movable spreading body to spread initially, the cam part is driven to rotate from the lower dead point to the upper dead point by pulling the spanner part, and the push rod is pushed to move for a certain distance so as to further spread the movable spreading body.
Preferably, the push rod of the movable distraction body and the axial hole front section of the main body are of non-circular cross sections which are matched with each other.
Preferably, the movable distractor is provided with semi-circular arms.
Preferably, the wrench portion comprises a first bending section, a straight rod section and a second bending section which are connected in sequence, the two bending sections are oppositely bent, the first bending section serves as a handle, and the second bending section is connected with the cam portion.
Preferably, the shielding sleeve which can slide along the main body is sleeved on the periphery of the middle-rear section of the main body, and the shielding sleeve is positioned on the front side of the knob; the shielding sleeve is provided with a sleeve axial groove which is opposite to the position of the main body groove, the second bending section penetrates through the sleeve axial groove, and the cam shaft of the cam part is fixed or hinged on the wall of the shielding sleeve.
Preferably, the length of the axial groove of the sleeve is matched with that of the second bending section, and when the straight rod section of the wrench part is attached to the middle front section of the main body, the second bending section is placed into the axial groove of the sleeve, and the cam wrench can be closed in a self-locking mode.
Preferably, a limiting groove for the camshaft to move axially along the main body is arranged at the middle rear section of the main body.
Preferably, the cam disc of the cam part is rotationally connected with the cam shaft, and the front end of the ejector rod is hinged with the cam shaft; the front end of the ejector rod is provided with a notch, and the cam disc is positioned at the notch.
Preferably, a stopper for preventing the push rod from coming off is provided between the rear end of the push rod and the front end of the body.
Preferably, the spreading parts are in a step shape and comprise transverse surfaces and vertical surfaces, the outer ends of the transverse surfaces are tilted upwards, and the outer end surfaces of the vertical surfaces protrude outwards to form an arc shape.
The invention has the following beneficial effects:
when the device is used in an operation, after the tooth-shaped claw touches the wall of a bone hole, namely when the knob is screwed to the maximum state, the wrench part of the cam wrench is pulled, the cam part (cam disc) is driven to rotate from the bottom dead center to the top dead center, and the push rod is pushed to move for a distance again, so that the movable spreading body is further spread and embedded into the inner wall of the bone hole, and firm fixation is realized.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a device for rapidly distracting and fixing bone holes according to the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic view of the cam wrench of FIG. 1;
FIG. 4 is a longitudinal cross-sectional view of FIG. 1;
FIG. 5 is a transverse cross-sectional view of FIG. 1;
FIG. 6 is a schematic structural diagram illustrating an overall structure of another embodiment of the bone hole rapid distraction fixation device of the invention;
fig. 7 is an exploded view of fig. 6.
The device comprises a main body 1, a limiting groove 101, a main body groove 102, a knob 2, a cam wrench 3, a first bending section 301, a straight rod section 302, a second bending section 303, a movable spreading body 4, a fixed spreading body 5, a spreading portion 6, a tooth-shaped claw 7, an axial hole 8, a thread 9, an ejector rod 10, a notch 1001, a cam portion 11, a push rod 12, a shielding sleeve 13, a sleeve axial groove 1301, a semicircular arm 14, a transverse surface 15 and a vertical surface 16.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
example 1
As shown in fig. 1-5, a bone hole quick-expanding fixing device comprises a main body 1, a knob 2, a cam wrench 3 and a movable expanding body 4. The front end of the main body 1 is provided with a fixed opening body 5, an axial hole is arranged in the main body, and the tail end of the main body is provided with a thread. The knob 2 is installed at the tail end of the main body through threads, and the ejector rod 10 is connected to the knob 2. The cam wrench 3 includes a cam portion and a wrench portion, and the cam portion 11 is fitted in the body groove 102 at the rear section of the axial hole. The movable opening body 4 is connected with a push rod 12, and the push rod 12 is arranged at the front section of the axial hole 8. The movable distraction body 4 and the fixed distraction body 5 are both provided with distraction parts 6, and the tail end of the distraction parts 6 is provided with a tooth-shaped claw 7. The carrier rod 10, the cam portion 11, and the carrier rod 12 are sequentially connected in the axial hole, and means that the front end surface of the carrier rod 10 is held in contact with the rear side of the cam portion 11, and the front side of the cam portion 11 is held in contact with the end surface of the carrier rod 12.
The push rod 12 of the movable spreader 4 and the front section of the axial hole of the main body are non-circular cross sections which are matched with each other, so that the push rod can be prevented from rotating.
The movable distraction body 4 is provided with a semicircular arm 14, and the semicircular arm 14 can fully expose a bone hole, so that the operation of the instrument is convenient.
The wrench portion comprises a first bending section 301, a straight rod section 302 and a second bending section 303 which are connected in sequence, the bending directions of the two bending sections are opposite, wherein the first bending section 301 serves as a handle, and the second bending section 303 is connected with the cam portion.
The middle-rear section of the main body 1 is sleeved with a shielding sleeve 13 which can slide along the main body, and the shielding sleeve 13 is positioned at the front side of the knob 2; the shielding sleeve 13 is provided with a sleeve axial groove 1301 opposite to the position of the groove of the main body, the second bending section 303 penetrates into the sleeve axial groove, and a cam shaft of the cam part is hinged on the wall of the shielding sleeve. When the shielding sleeve 13 is sleeved on the main body, the camshaft can enter a limiting groove 101 arranged at the rear section in the main body 1, so that the camshaft can stably move in the limiting groove along the axial direction of the main body.
The length of the sleeve axial groove 1301 is matched with that of the second bending section 303, when a straight rod section of the wrench part is attached to the middle front section of the main body, the cam part is positioned at a point which passes through the top dead center, the movable opening body is positioned at the maximum opening position, the second bending section 302 is arranged in the axial groove, and the cam wrench can be closed in a self-locking mode.
A limiting part for preventing the push rod from dropping off is arranged between the rear end of the push rod and the front end of the main body, so that the push rod can be prevented from dropping off from the axial hole.
The opening parts 6 are in a step shape and comprise transverse surfaces 15 and vertical surfaces 16, the outer ends of the transverse surfaces are tilted upwards, and the outer end surfaces of the vertical surfaces protrude outwards to form an arc shape.
According to the invention, the knob 2 is rotated, in the knob screwing process, the knob carries the ejector rod to move forwards, the ejector rod 10 pushes the cam part 11 to move, the shielding sleeve follows up, then the cam part 11 pushes the push rod to move and carries the movable spreading body to initially spread, when the knob is screwed to the maximum state, the spanner part is pulled to drive the cam part to rotate, in the process, the cam shaft rotates around the hinge point, so that the cam disc of the cam part 11 rotates from the lower dead point to the upper dead point, and pushes the push rod to move for a certain distance to further spread the movable spreading body, and the tooth-shaped claw of the spreading part is embedded into the inner wall of the bone hole, so that firm fixation is realized.
Example 2
Referring to fig. 6 and 7, the bone hole quick-expanding fixing device comprises a main body 1, a knob 2, a cam wrench 3 and a movable expanding body 4. The front end of the main body 1 is provided with a fixed opening body 5, an axial hole is arranged in the main body, and the tail end of the main body is provided with a thread. The knob 2 is installed at the tail end of the main body through threads, and the tail end of the ejector rod 10 is inserted into the knob 2. The cam wrench 3 includes a cam portion and a wrench portion, and the cam portion 11 is fitted in the body groove 102 at the rear section of the axial hole. The movable opening body 4 is connected with a push rod 12, and the push rod 12 is arranged at the front section of the axial hole 8. The movable distraction body 4 and the fixed distraction body 5 are both provided with distraction parts, and the tail sections of the distraction parts are provided with tooth-shaped claws. The push rod 10, the cam part 11 and the push rod 12 are sequentially connected in the axial hole, and the means that the front end of the push rod 10 is hinged with the camshaft of the cam part 1, and the front side of the cam part 11 is kept in contact with the end face of the push rod 12.
The wrench part comprises a first bending section, a straight rod section and a second bending section which are sequentially connected, the bending directions of the two bending sections are opposite, the first bending section serves as a handle, and the second bending section is connected with the cam part.
The middle-rear section of the main body 1 is sleeved with a shielding sleeve 13 which can slide along the main body, and the shielding sleeve 13 is positioned at the front side of the knob 2; the shielding sleeve 13 is provided with a sleeve axial groove 1301 opposite to the position of the main body, the second bending section 303 penetrates into the sleeve axial groove, and the cam shaft of the cam part is fixed on the wall of the shielding sleeve. When the shielding sleeve 13 is sleeved on the main body, the camshaft can enter a limiting groove 101 arranged at the rear section in the main body 1, so that the camshaft can stably move in the limiting groove along the axial direction of the main body.
The cam disc of the cam part is rotationally connected with the cam shaft, the front end of the ejector rod is provided with a notch, two sides of the notch are hinged with the cam shaft, and the cam disc is positioned at the notch.
According to the invention, the knob 2 is rotated, in the knob screwing process, the knob carries the ejector rod to move forwards, the ejector rod 10 pushes the cam part 11 to move, the shielding sleeve follows up, then the cam part 11 pushes the push rod to move and carries the movable spreading body to initially spread, when the knob is screwed to the maximum state, the spanner part is pulled to drive the cam disc to rotate, in the process, the cam shaft is not moved, the cam disc rotates from the bottom dead center to the top dead center, the push rod pushes the push rod to move for a certain distance, the movable spreading body is further spread, and the tooth-shaped claws of the spreading part are embedded into the inner wall of the bone hole, so that firm fixation is realized.
The technical contents not described in this embodiment may be the same as those of embodiment 1.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. A bone hole rapid opening fixing device is characterized by comprising a main body, a knob, a cam wrench and a movable opening body; the front end of the main body is provided with a fixed distraction body, the interior of the main body is provided with an axial hole, and the tail end of the main body is provided with a thread; the knob is arranged at the tail end of the main body through threads and is provided with a mandril; the cam spanner comprises a cam part and a spanner part, wherein the cam part is arranged in a main body groove at the rear section of the axial hole; the movable opening body is connected with a push rod, the push rod is installed at the front section of the axial hole, the movable opening body and the fixed opening body are both provided with opening parts, and the tail sections of the opening parts are provided with tooth-shaped claws; the ejector rod, the cam part and the push rod are connected in sequence in the axial hole; the knob is rotated, the ejector rod pushes the cam part to move, the cam part pushes the push rod to move so as to carry the movable spreading body to spread initially, the cam part is driven to rotate from the lower dead point to the upper dead point by pulling the spanner part, and the push rod is pushed to move for a certain distance so as to further spread the movable spreading body.
2. The device as claimed in claim 1, wherein the push rod of the movable distraction body and the front section of the axial hole of the main body have non-circular cross-sections which are matched with each other.
3. The device as claimed in claim 1, wherein the movable distractor has semi-circular arms.
4. The device as claimed in claim 1, wherein the wrench portion comprises a first bending section, a straight rod section and a second bending section, the first bending section, the straight rod section and the second bending section are connected in series, the two bending sections are oppositely bent, the first bending section serves as a handle, and the second bending section is connected with the cam portion.
5. The device for rapidly distracting and fixing the bone hole according to claim 4, wherein the shielding sleeve which can slide along the main body is sleeved on the periphery of the middle-rear section of the main body, and the shielding sleeve is positioned on the front side of the knob; the shielding sleeve is provided with a sleeve axial groove which is opposite to the position of the main body groove, the second bending section penetrates through the sleeve axial groove, and the cam shaft of the cam part is fixed or hinged on the wall of the shielding sleeve.
6. The device as claimed in claim 5, wherein the length of the axial groove of the sleeve is adapted to the length of the second bending section, and when the straight rod section of the wrench portion abuts against the middle front section of the main body, the second bending section is inserted into the axial groove of the sleeve, and the cam wrench can be closed by self-locking.
7. The device as claimed in claim 5, wherein a limiting groove is provided at the middle rear section of the main body for the cam shaft to move axially along the main body.
8. The bone hole rapid distraction fixation device of claim 5, wherein the cam plate of the cam portion is rotationally coupled with the cam shaft, and the front end of the post rod is hinged with the cam shaft; the front end of the ejector rod is provided with a notch, and the cam disc is positioned at the notch.
9. The device as claimed in claim 2, wherein a stopper is provided between the rear end of the rod and the front end of the body to prevent the rod from coming out.
10. The device for rapidly distracting and fixing the bone hole according to claim 1, wherein the distracting parts are all stepped and comprise a transverse surface and a vertical surface, the outer end of the transverse surface is tilted upwards, and the outer end surface of the vertical surface protrudes outwards to form an arc shape.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010164060.2A CN111317521A (en) | 2020-03-11 | 2020-03-11 | Fixing device for quickly opening bone hole |
| PCT/CN2020/122706 WO2021179615A1 (en) | 2020-03-11 | 2020-10-22 | Rapid strutting and fixing device for bone hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010164060.2A CN111317521A (en) | 2020-03-11 | 2020-03-11 | Fixing device for quickly opening bone hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111317521A true CN111317521A (en) | 2020-06-23 |
Family
ID=71169170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010164060.2A Pending CN111317521A (en) | 2020-03-11 | 2020-03-11 | Fixing device for quickly opening bone hole |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111317521A (en) |
| WO (1) | WO2021179615A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021179615A1 (en) * | 2020-03-11 | 2021-09-16 | 北京梅德厚普科技有限公司 | Rapid strutting and fixing device for bone hole |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340215C (en) * | 2005-09-19 | 2007-10-03 | 吴乃庆 | Bone dilator |
| DE102006059236B3 (en) * | 2006-12-13 | 2008-02-14 | Condor Gmbh Medicaltechnik | Central holder of surgical wound spreading system has holding claw fixed on holding tube, push rod passing through thread in holding claw, which has longitudinal guide for complementary claw |
| WO2013089590A1 (en) * | 2011-12-14 | 2013-06-20 | Общество С Ограниченной Ответственностью "Орто-Сув" | Extracortical fixation set |
| CN203988302U (en) * | 2014-08-04 | 2014-12-10 | 金敏 | A kind of bone dilator |
| CN106419977A (en) * | 2016-10-12 | 2017-02-22 | 中国人民解放军第二军医大学第二附属医院 | Universal automatic spinal retractor |
| CN109009479B (en) * | 2018-09-18 | 2023-12-19 | 北京梅德厚普科技有限公司 | Auxiliary fixing device for operation |
| CN111166491A (en) * | 2020-03-11 | 2020-05-19 | 北京梅德厚普科技有限公司 | Surgery operation double-ball fixing device |
| CN111317521A (en) * | 2020-03-11 | 2020-06-23 | 北京梅德厚普科技有限公司 | Fixing device for quickly opening bone hole |
-
2020
- 2020-03-11 CN CN202010164060.2A patent/CN111317521A/en active Pending
- 2020-10-22 WO PCT/CN2020/122706 patent/WO2021179615A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021179615A1 (en) * | 2020-03-11 | 2021-09-16 | 北京梅德厚普科技有限公司 | Rapid strutting and fixing device for bone hole |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021179615A1 (en) | 2021-09-16 |
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