CN212118239U - Free bone block taking-out forceps after joint replacement osteotomy - Google Patents
Free bone block taking-out forceps after joint replacement osteotomy Download PDFInfo
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- CN212118239U CN212118239U CN202020287104.6U CN202020287104U CN212118239U CN 212118239 U CN212118239 U CN 212118239U CN 202020287104 U CN202020287104 U CN 202020287104U CN 212118239 U CN212118239 U CN 212118239U
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- arc
- shaped clamping
- forceps
- joint replacement
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 65
- 238000000605 extraction Methods 0.000 claims description 2
- 239000012634 fragment Substances 0.000 claims 2
- 210000000080 chela (arthropods) Anatomy 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 210000002303 tibia Anatomy 0.000 description 15
- 210000000629 knee joint Anatomy 0.000 description 5
- 210000001699 lower leg Anatomy 0.000 description 5
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000002792 vascular Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000013150 knee replacement Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000845 cartilage Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a free bone block takes out pincers after joint replacement cuts bone belongs to medical instrument technical field. The method comprises the following steps: the middle parts of the two tool handles are hinged; the two tool handles are respectively arranged at the tail ends of the two tool handles; the two linear clamping parts are respectively arranged at the head ends of the two tool handles, and one side of the two linear clamping parts, which is close to each other, is provided with a plurality of sharp teeth; the two arc-shaped clamping parts are respectively arranged at one end of the two straight-shaped clamping parts, which is far away from the knife handle, and one side of the two arc-shaped clamping parts, which is close to each other, is provided with a plurality of sharp teeth; the bulge is arranged at the joint of the straight-line-shaped clamping part and the corresponding arc-line-shaped clamping part, and a clamping groove is formed in one side, provided with a plurality of sharp teeth, of the straight-line-shaped clamping part and matched with the bone convex shape of the bone block to be clamped. The utility model provides a pair of free bone piece takes out pincers after joint replacement cuts bone, the stub that takes out free bone that can be comparatively effective quick shortens operation time, reduces free bone and increases the risk that receives extra damage.
Description
Technical Field
The utility model relates to the technical field of medical equipment, specifically relate to a free bone block takes out pincers after joint replacement technique cuts bone.
Background
In the field of joint replacement, particularly knee joint replacement, the upper end of a tibia needs to be cut off by 2-5mm, the shape of the upper end of a free tibia is a semicircle with the radius of about 5-7cm, and the thickness of the upper end of the free tibia is a semi-cylinder with the thickness of about 2-5 mm. Due to the traction of the ligament, a large forward force and an outward rotation force are required to be applied to the stump for taking out. The joint surface of the stump is full of cartilage and meniscus, so that the joint is relatively lubricated, the joint cannot be clamped by a conventional forceps, and a special clamping instrument is lacked.
CoCo forceps or elbow vascular forceps for currently removing the stump. The Coco forceps are straight forceps, the tail end of each straight forceps is provided with a single sharp tooth, the upper end of a free tibia can be clamped, the clamping force is limited, and the force cannot be applied by rotation; although the elbow vascular clamp can rotate, the arc of the elbow vascular clamp is not attached to the upper end stub of the tibia due to the absence of the sharp teeth, so that the free tibia stub cannot be clamped, and the effect of clamping the clamp cannot be achieved. So that the upper end of the tibia needs to be repeatedly taken out, the time is consumed, and the injury risk is increased.
Therefore, the forceps for taking out the free bone blocks at the near end of the tibial osteotomy in the knee replacement surgery are special for taking out the free bone blocks at the near end of the tibial osteotomy in the knee replacement surgery, convenient to rotate and apply force, provided with sharp teeth and convenient to clamp the free tibial stump.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the free bone block taking-out forceps after the osteotomy of the joint replacement operation are provided, the stump of the free bone can be effectively and quickly taken out, the operation time is shortened, and the risk that the free bone is additionally damaged is reduced.
The specific technical scheme is as follows:
a free bone block extraction forceps after joint replacement osteotomy, comprising: two knife handles, two straight line-shaped clamping parts, two arc-shaped clamping parts and a bulge,
wherein the middle parts of the two tool handles are hinged; the two tool handles are respectively arranged at the tail ends of the two tool handles; the two linear clamping parts are respectively arranged at the head ends of the two tool handles, and one side of the two linear clamping parts, which is close to each other, is provided with a plurality of sharp teeth; the two arc-shaped clamping parts are respectively arranged at one end of the two straight-shaped clamping parts, which is far away from the knife handle, and one side of the two arc-shaped clamping parts, which is close to each other, is provided with a plurality of sharp teeth; the bulge is arranged at the joint of the straight-line-shaped clamping part and the corresponding arc-line-shaped clamping part, and a clamping groove is formed in one side, provided with a plurality of sharp teeth, of the straight-line-shaped clamping part and matched with the bone convex shape of the bone block to be clamped.
In the forceps for removing the free bone blocks after the joint replacement osteotomy, the two tool handles and the two linear clamping parts are positioned on the same horizontal plane, and the two arc-shaped clamping parts extend along one side of the horizontal plane in an arc shape.
In the above-mentioned forceps for removing a free bone mass after an osteotomy in joint replacement surgery, it is further characterized in that the linear grip portion on the side not provided with the projection has a length of 1.5cm to 2.5 cm.
In the above forceps for removing a free bone mass after an osteotomy in joint replacement, further, it is characterized in that the arc-shaped holding portion on the side not provided with the projection is a quarter circle arc having a radius of 2cm to 3 cm.
In the free bone block taking-out forceps after the joint replacement osteotomy, the free bone block taking-out forceps are further characterized in that the sharp teeth of the linear clamping part and the arc-shaped clamping part have the length of 1.5mm-2.5 mm.
In the forceps for taking out the free bone blocks after the osteotomy of the joint replacement, the clamping groove is rectangular; or the clamping groove is in an isosceles trapezoid shape; or the clamping groove is in a semicircular ring shape.
In the forceps for taking out the free bone block after the osteotomy of the joint replacement, the plurality of sharp teeth are uniformly arranged along the length direction of the linear clamping part or the arc-shaped clamping part, and the sharp teeth of the two linear clamping parts or the two arc-shaped clamping parts are mutually meshed.
In the above forceps for removing the free bone block after the joint replacement osteotomy, the above forceps is further characterized by further comprising a limiting table, the limiting table is arranged on one side of one of the handles close to the other handle, and the limiting table can be contacted with or separated from the other handle.
In the forceps for taking out the free bone blocks after the osteotomy of the joint replacement, the limiting table is contacted with the other handle, and the two linear clamping parts and the two arc-shaped clamping parts are closed; the limit table is separated from the other knife handle, and the two linear clamping parts and the two arc-shaped clamping parts are opened.
The positive effects of the technical scheme are as follows:
the utility model provides a pair of free bone piece takes out pincers after joint replacement cuts bone, for the elbow pincers, one side that the clamping part of binding clip is close to each other all is provided with sharp tooth, and wherein the clamping part of one side still is equipped with an arch, the draw-in groove of protruding formation and the shape phase-match of free bone upper end stub can be comparatively powerful the free bone of centre gripping effectively, the rotatory power of being convenient for simultaneously, for this can be comparatively effective quick take out the stub of free bone, shorten operation time, reduce free bone and increase the risk that receives extra damage.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a forceps for removing free bone mass after joint replacement osteotomy of the present invention;
FIG. 2 is a schematic side view showing the shape of the head of a free bone block removing forceps according to an embodiment of the present invention;
fig. 3 is a schematic view of the head portion of a free bone mass removing forceps in a top view according to an embodiment of the present invention.
In the drawings: 1. a first handle; 2. a second handle; 3. a first tool holder; 4. a second tool holder; 5. a limiting table; 6. a hinge; 7. a first linear clamping portion; 8. a second linear clamping portion; 9. a first arc-shaped clamping part; 10. a second arc-shaped clamping part; 11. and (4) protruding.
Detailed Description
In order to make the technical means, creation features, achievement purposes and effects of the present invention easy to understand, the following embodiments are combined with the accompanying drawings 1 to 3 to specifically illustrate the forceps for taking out free bone pieces after the osteotomy of joint replacement.
In the forceps for taking out free bone blocks after the osteotomy of the joint replacement, the two tool handles comprise a first tool handle 1 and a second tool handle 2, the middle parts of the first tool handle 1 and the second tool handle 2 are hinged through a hinge 6, the two tool handles comprise a first tool handle 3 and a second tool handle 4, the two tool handles are used as holding ends of the forceps and are generally two closed rings, the first tool handle 3 is arranged at the tail end of the first tool handle 1, and the second tool handle 4 is arranged at the tail end of the second tool handle 2.
Similarly, the linear clamping part comprises a first linear clamping part 7 and a second linear clamping part 8, the arc-shaped clamping part comprises a first arc-shaped clamping part 9 and a second arc-shaped clamping part 10, the head end of the first tool handle 1 is sequentially provided with the first linear clamping part 7 and the first arc-shaped clamping part 9, the inner sides of the first linear clamping part 7 and the first arc-shaped clamping part 9 are continuously provided with sharp teeth, the head end of the second tool handle 2 is sequentially provided with the second linear clamping part 8 and the second arc-shaped clamping part 10, the inner sides of the second linear clamping part 8 and the second arc-shaped clamping part 10 are continuously provided with sharp teeth, two rows of left and right sharp teeth which correspond to each other are used for penetrating into cancellous bone of free bone when the taking-out forceps are engaged, and the powerful engagement of the taking forceps and the free bone is realized.
Wherein the junction of first linear clamping part 7 and first arc-shaped clamping part 9 sets up arch 11, a draw-in groove is seted up to this arch 11 in one side that first linear clamping part 7 was provided with a plurality of sharp teeth, this draw-in groove and the bone convex shape phase-match of treating the centre gripping bone piece, first linear clamping part 7 promptly, the linear clamping part 8 of second, first arc-shaped clamping part 9, the linear clamping part 10 of second arc and arch 11 surround and form a space, be convenient for medical personnel to treat the centre gripping bone piece and carry out the centre gripping hard, in rotatory in-process power.
In a preferred embodiment, as shown in fig. 1, the two tool shanks and the two linear clamping portions (i.e. the first tool shank 1, the second tool shank 2, the first tool shank 3, the second tool shank 4, the first linear clamping portion 7 and the second linear clamping portion 8) are located on the same horizontal plane, and the two arc-shaped clamping portions (the first arc-shaped clamping portion 9 and the second arc-shaped clamping portion 10) extend in an arc shape along one side of the horizontal plane, so that the forceps can be taken out to clamp the free bone and then rotate.
In a preferred embodiment, as shown in fig. 1 and 2, the linear clamping portion (i.e. the second linear clamping portion 8) on the side not provided with the protrusion has a length of 1.5cm to 2.5cm, more preferably 2 cm. In the knee joint replacement, the upper end of the tibia needs to be cut off by 2-5mm, the upper end of the free tibia is in the shape of a semicircle with the radius of about 5-7cm and a semi-cylinder with the thickness of about 2-5mm, and the size and specification of the linear clamping part are adapted to the size and specification of the free tibia to be clamped, so that the knee joint replacement is beneficial to the operation of medical staff in the operation.
In a preferred embodiment, as shown in fig. 1 and 2, the arc-shaped clamping portion (i.e., the second arc-shaped clamping portion 10) on the side not provided with the protrusions is a quarter-circle arc with a radius of 2cm to 3cm, and a further preferred arc radius is 2.5 cm. In the knee joint replacement, the upper end of the tibia needs to be cut off by 2-5mm, the upper end of the free tibia is in the shape of a semicircle with the radius of about 5-7cm and a semi-cylinder with the thickness of about 2-5mm, and the size specification of the arc-shaped clamping part is adapted to the size specification of the free tibia to be clamped, so that the clamping rotation of medical staff in the operation is facilitated.
In a preferred embodiment, as shown in fig. 1 and 3, the first linear clamping part 7, the second linear clamping part 8, the first arc-shaped clamping part 9 and the second arc-shaped clamping part 10 have a tine length of 1.5mm to 2.5mm, and a further preferred tine length is 2 mm. The arrangement of the tooth tip is convenient for puncturing cancellous bone of free bone so as to improve the clamping strength of the taking-out forceps and the free bone.
In a preferred embodiment, as shown in fig. 1 and 3, the slot is rectangular; or the clamping groove is in an isosceles trapezoid shape; or the clamping groove is in a semicircular ring shape. The skeleton of centre gripping as required is different, but the draw-in groove of optional different shapes for the bulge of free bone is better with the laminating degree of taking out pincers, is convenient for carry out the centre gripping rotation to free bone. The extracting forceps are mainly suitable for clamping free shin bones in knee joint replacement, and generally adopt clamping grooves which are approximately in an isosceles trapezoid shape.
In a preferred embodiment, as shown in fig. 1, a plurality of sharp teeth are uniformly arranged along the length direction of the linear clamping portion (the first linear clamping portion 7 and the second linear clamping portion 8) or the arc-shaped clamping portion (the first arc-shaped clamping portion 9 and the second arc-shaped clamping portion 10), and the sharp teeth of the two linear clamping portions (the first linear clamping portion 7 and the second linear clamping portion 8) or the two arc-shaped clamping portions (the first arc-shaped clamping portion 9 and the second arc-shaped clamping portion 10) are engaged with each other, so that the mutually engaged sharp teeth can enhance the clamping strength between the taking-out forceps and the free bone.
In a preferred embodiment, as shown in fig. 1, the pliers further comprise a limiting table 5, the limiting table 5 is arranged on one side of one of the tool holders (in the figure, the first tool holder 3) close to the other tool holder (in the figure, the second tool holder 4), the limiting table 5 can be contacted with or separated from the other tool holder (in the figure, the second tool holder 4), and the limiting table 5 is arranged to enable the first tool holder 3, the second tool holder 4 and the hinge 6 to form a triangular gap in a closed state, so that the opening and closing of the pliers are simpler and labor-saving, and the pliers are convenient to use.
In a preferred embodiment, as shown in fig. 1, the limit table 5 is in contact with another tool holder (in the figure, the second tool holder 4), and the two linear clamping portions (the first linear clamping portion 7 and the second linear clamping portion 8) and the two arc-shaped clamping portions (the first arc-shaped clamping portion 9 and the second arc-shaped clamping portion 10) are closed; the limit table 5 is separated from another knife handle (a second knife handle 4 in the figure), and the two linear clamping parts (a first linear clamping part 7 and a second linear clamping part 8) and the two arc-shaped clamping parts (a first arc-shaped clamping part 9 and a second arc-shaped clamping part 10) are opened.
In the following description, a specific embodiment is described, and it should be noted that the structures, processes and materials described in the following embodiment are only used to illustrate the feasibility of the embodiment, and are not intended to limit the scope of the present invention.
When the limiting table 5 is close to and touches the second knife handle 4, the first linear clamping part 7 and the second linear clamping part 8 are closed, and the first arc-shaped clamping part 9 and the second arc-shaped clamping part 10 are closed; on the contrary, the first linear clamping part 7 and the second linear clamping part 8 are opened, and the first arc-shaped clamping part 9 and the second arc-shaped clamping part 10 are opened.
In the present preferred embodiment, the second linear clamp 8 is 2cm in length. The second arc-shaped clamping part 10 is arc-shaped, and the radius of the arc is 2.5 cm. First rectilinear clamping part 7, the rectilinear clamping part 8 of second, first camber clamping part 9 and the rectilinear clamping part 10 of second are close to each other and contact the even sharp tooth that sets up 2mm of department, pierce into free shin bone upper end spongy bone during the interlock, realize strong interlock, provide the support of power for dead ahead and rotation tractive. The second linear clamping part 8 is a 2cm straight clamp and is used for drawing towards the right front; the second arcuate gripper section 10 is 2.5cm in diameter and is used for rotational pulling. The first linear clamping part 7, the second linear clamping part 8, the first arc-shaped clamping part 9, the second arc-shaped clamping part 10 and the protrusion 11 form a clamping groove which is used for clamping bony prominences and is convenient to clamp forcefully.
The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.
Claims (9)
1. A free bone block extraction forceps after joint replacement osteotomy, comprising:
the middle parts of the two tool handles are hinged;
the two tool handles are respectively arranged at the tail ends of the two tool handles;
the two linear clamping parts are respectively arranged at the head ends of the two tool handles, and one side of the two linear clamping parts, which is close to each other, is provided with a plurality of sharp teeth;
the two arc-shaped clamping parts are respectively arranged at one end of the two straight-shaped clamping parts, which is far away from the knife handle, and one side of the two arc-shaped clamping parts, which is close to each other, is provided with a plurality of sharp teeth;
the bulge is arranged at the joint of one linear clamping part and the arc-shaped clamping part, a clamping groove is formed in one side, provided with a plurality of sharp teeth, of the linear clamping part, and the clamping groove is matched with the bone convex shape of a bone block to be clamped.
2. The forceps for removing free bone blocks after osteotomy in joint replacement as claimed in claim 1, wherein the two handles, the two handles and the two linear clamping portions are located on a same horizontal plane, and the two arcuate clamping portions extend in an arcuate shape along one side of the horizontal plane.
3. The forceps for removing free bone mass after joint replacement osteotomy as claimed in claim 1, wherein the linear clamping portion on the side not provided with the projection has a length of 1.5cm to 2.5 cm.
4. The forceps for removing free bone blocks after joint replacement osteotomy as claimed in claim 1, wherein the arcuate clamping portion on the side not provided with the protrusion is a quarter circle arc having a radius of 2cm to 3 cm.
5. The forceps for removing free bone fragments after joint replacement osteotomy of claim 1, wherein the linear clamping portion and the arcuate clamping portion have tines of a length of 1.5mm to 2.5 mm.
6. The forceps for removing free bone fragments after joint replacement osteotomy as claimed in claim 1, wherein the slot is rectangular; or the clamping groove is in an isosceles trapezoid shape; or the clamping groove is in a semicircular ring shape.
7. The forceps for removing free bone blocks after joint replacement osteotomy as claimed in claim 1, wherein the plurality of sharp teeth are uniformly arranged along a length direction of the linear clamping portion or the arc-shaped clamping portion, and the sharp teeth of the two linear clamping portions or the two arc-shaped clamping portions are engaged with each other.
8. The forceps for removing free bone blocks after joint replacement osteotomy as claimed in claim 1, further comprising a stop provided on a side of one of the handles adjacent to the other handle, the stop being engageable with or disengageable from the other handle.
9. The forceps for removing free bone pieces after joint replacement osteotomy of claim 8,
the limiting table is contacted with the other cutter handle, and the two linear clamping parts and the two arc-shaped clamping parts are closed;
the limiting table is separated from the other knife handle, and the two linear clamping parts and the two arc-shaped clamping parts are opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020287104.6U CN212118239U (en) | 2020-03-10 | 2020-03-10 | Free bone block taking-out forceps after joint replacement osteotomy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020287104.6U CN212118239U (en) | 2020-03-10 | 2020-03-10 | Free bone block taking-out forceps after joint replacement osteotomy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212118239U true CN212118239U (en) | 2020-12-11 |
Family
ID=73673219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020287104.6U Expired - Fee Related CN212118239U (en) | 2020-03-10 | 2020-03-10 | Free bone block taking-out forceps after joint replacement osteotomy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212118239U (en) |
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2020
- 2020-03-10 CN CN202020287104.6U patent/CN212118239U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201211 |