CN212699093U - Absorbable medical combined binding belt - Google Patents

Abstract

The utility model relates to an it binds area to absorb medical combination formula, bind the area and include the section of binding and the section of pulling of being made by non-absorbable material of making by absorbable material, pull the section and include traction head, traction portion and connecting portion in proper order, the one end of binding the section links to each other with the connecting portion of pulling the section, and the other end of binding the section is equipped with hasp portion the hasp portion is equipped with the import hole and the export hole that the section of pulling passed be equipped with the hasp tooth between import hole and the export hole the back evenly continuous distribution of binding the section have a plurality of can with the tooth that prevents returning of hasp tooth meshing mutually. The utility model can realize the 360-degree all-dimensional attaching binding of the binding part, has no binding dead angle, and has small volume of the lock catch part and small local bulge after the operation; the binding section has good biocompatibility and can be degraded along with the healing of the fracture, and the device does not need to be taken out in a secondary operation.

Description

Absorbable medical combined binding belt

Technical Field

The utility model belongs to the technical field of orthopedics medical instrument technique and specifically relates to an absorbable medical combination formula binding area.

Background

In the existing orthopedic surgery, a steel wire or a steel cable is generally used for assisting the fixation of comminuted fracture, torn fracture and smaller bone blocks. The strength, rigidity and fatigue resistance of the metal material are ideal, but the elastic modulus of the steel wire is high, and the osteoporosis caused by the stress shielding effect can possibly cause the postoperative secondary fracture; on the other hand, when the fracture is healed, the callus around the broken end often wraps the binding steel wire, so the muscle needs to be cut again when the steel wire is taken out, new trauma is caused, and even the risk of damaging peripheral nerve blood vessels is damaged, which means that patients not only suffer from secondary operation, but also increase economic burden.

The common silk thread as a suture material has good elasticity, toughness and plasticity and excellent histocompatibility, and can effectively bind bone blocks together to form a whole body for comminuted fracture. The silk thread can reduce the stress shielding of the internal fixture on the fracture section, accelerate the healing of the fracture end, is not easy to loose bones and vegetables, does not need a secondary operation to take out the internal fixture, and reduces the probability of tissue injury and infection. But is only used for smaller bone pieces or for auxiliary fixation, and mostly also for external fixation, due to the insufficient strength of the wires.

Chinese patent CN201120537796 discloses a steel wire for orthopedic surgery, and this utility model adds absorbable material protective sheath outside the medical steel wire, can avoid because the steel wire leads to the situation that the bone is ischemic necrosis too tightly, can make the blood supply unobstructed. But cannot avoid the steel wire from being taken out in the secondary operation.

Chinese patent CN 203677235U discloses an absorbable flexible strapping tape; chinese patent CN 201743760U, a belt type absorbable fracture fixation belt. These two utility model all adopt absorbable material to make, and the pliability of strapping is good, can freely bend, and it is reliable to bind, need not the secondary operation and takes out the tie body. However, the locking mode of the binding band adopts the thread stress application and the screwing fixation, the structure mode has larger volume, especially the locking part occupies large space, the local bulge after the operation is obvious, and the psychological burden is caused to the patient. In addition, such a structure is difficult to fix a fracture at a narrow position such as a metacarpal bone and a phalanx.

Chinese patent ZL200720082285.3 discloses an absorbable tying band, and this utility model is made with absorbable material equally, and the hasp structure adopts the profile of tooth meshing, and the hasp position occupies space and is little than the screw fastening mode, and the operation is easy and simple to handle, need not the secondary operation and takes out the tie up body. However, the structure has a binding dead angle, the binding belt can not be attached to the bone surface in 360 degrees in all directions, and meanwhile, the problem of large local bulge exists after binding.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an absorbable medical combination formula binding area to solve the unsatisfactory problem of current binding area result of use.

The utility model discloses a realize like this: the utility model provides an it binds area to absorb medical combination formula, bind the area and include the section of binding and the section of pulling of being made by non-absorbable material of being made by absorbable material, pull the section and include traction head, traction portion and connecting portion in proper order, the one end of binding the section links to each other with the connecting portion of pulling the section, and the other end of binding the section is equipped with hasp portion be equipped with the import hole and the export hole that the section of pulling passed that supply be equipped with the hasp tooth between import hole and the export hole the back evenly continuously distributed of binding the section have a plurality of can with the anti-backset tooth that the hasp tooth engaged with.

The front face of the lock catch part, which is contacted with a bound object, is an arc-shaped concave curved surface, and the arc radius of the concave curved surface is 5-20 mm.

The number of the locking teeth is 1-5, and the tooth pitch is 0.2-4 mm; the number of the anti-rollback teeth is 3-500, and the tooth pitch is 0.2-4 mm.

A plurality of anti-sideslip teeth in a shape like a Chinese character 'pin' are uniformly and continuously distributed on the front surface of the binding section, which is in contact with the bound object.

The width of the traction head is 0.6 times of the width of the traction part, and the traction head is obliquely arranged towards the front and forms an included angle of 15 degrees with the traction part.

The connecting part of the traction section is connected with the end part of the binding section in a pin connection mode.

A plurality of convex columns are distributed on the surface of the connecting part of the traction section, and the distance between the convex columns and the edge of the connecting part of the traction section is more than 0.3 mm; a plurality of through holes which can be in interference fit with the convex columns are distributed at the end parts of the binding sections, and the distance between the through holes and the edges of the binding sections is more than 0.5 mm.

The convex column is of an oblong, rectangular, trapezoidal, circular or polygonal structure.

The absorbable material for the binding band is one or more of polylactic acid, polycaprolactone, polylactic acid-glycolic acid copolymer, polyglycolic acid, polyhydroxyalkanoate, and polyhydroxybutyrate.

The non-absorbable material used for the traction section is one or a mixture of more than one of polyethylene, polypropylene, polyformaldehyde, polycarbonate and acrylonitrile-butadiene-styrene copolymer.

The binding section is a composite material prepared from the absorbable material and bioactive ceramics or bioactive glass, and the bioactive ceramics or bioactive glass is as follows: one or more of hydroxyapatite ceramic, active alumina haydite, beta-tricalcium phosphate porous ceramic or titanium dioxide.

The utility model can realize the 360-degree all-dimensional attaching binding of the binding part, has no binding dead angle, and has small volume of the lock catch part and small local bulge after the operation; the binding section has good biocompatibility and can be degraded along with the healing of the fracture, and the device does not need to be taken out in a secondary operation.

The utility model discloses a two aim at of segmentation structure are convenient for mould plastics, because of the mobility of absorbable material is poor, can't realize moulding plastics of overlength shape, fall into two sections, bind the section and adopt the absorbable material to make, pull the section and need not to implement and bind the function, therefore adopt not absorbent material to make, the actual production of being convenient for. After the tying is fixed, the doctor cuts off the traction section, the tying section is left in the body, and the tying section is gradually degraded along with the growth of callus and is removed from the body.

Drawings

Fig. 1 is a schematic front structural view of the present invention.

Fig. 2 is a schematic view of the back structure of the present invention.

Fig. 3 is a schematic structural view of the binding section locking part of the present invention.

Fig. 4 is a structural diagram of the connecting part of the long circular convex column and the binding section of the traction section of the utility model. Wherein, A is a schematic diagram of the connecting part of the traction section, B is a schematic diagram of the connecting part of the binding section, and C is a top view of B.

Fig. 5 is a structure diagram of the connection part of the traction section and the binding section of the present invention. The figure contains the connection forms of 7 (a-G) geometries in addition to fig. 4. Wherein the blank segment represents the bundled segment and the grid segment represents the towed segment.

Fig. 6 is a schematic structural diagram of the traction section of the present invention. Wherein A is a front view and B is a side view.

Fig. 7 is a front and back structural schematic diagram of the binding section of the present invention. Wherein A is a front view, B is a side view, and C is a rear view.

In the figure: 1. the binding section comprises a binding section 2, a traction section 3, a traction head 4, a traction part 5, a connecting part 6, a locking part 7, a convex column 8, a through hole 9, a leading-in hole 10, a leading-out hole 11, a locking tooth 12, an anti-returning tooth 13, a concave curved surface 14 and an anti-sideslip tooth.

Detailed Description

As shown in fig. 1-7, the utility model discloses a structure is including binding section 1 and pulling section 2, pulls section 2 and is moulded plastics an organic whole structure that forms by non-absorbable material, includes traction head 3, traction portion 4 and connecting portion 5 in proper order, and traction head 3's width is 0.6 times of traction portion 4 width, and traction head 3 sets up to positive slope to be 15 contained angles with traction portion 4. The binding section 1 is of an integral structure formed by injection molding of an absorbable material, one end of the binding section 1 is overlapped and connected with the connecting part 5 of the traction section, and the other end of the binding section is provided with a locking part 6.

The front surface of the connecting part 5 of the traction section is distributed with a plurality of convex columns 7, the convex columns 7 can be in an oblong, rectangular, trapezoidal, circular or polygonal structure, the cross section of each convex column 7 is oblong as shown in figure 4, the distance between each oblong convex column 7 and the edge of the connecting part 5 of the traction section is more than 0.3mm, the length of each oblong convex column is 1-5 mm, the width of each oblong convex column is 1-4 mm, the side surface of each oblong convex column is an inclined surface, and the angle alpha of each inclined surface is 1-10 degrees. A plurality of oblong through holes 8 which can be in interference fit with the oblong convex columns are distributed at corresponding positions of the end parts of the binding sections, and the distance between the oblong through holes 8 and the edge of the binding section 1 is more than 0.5 mm. The size of the through hole 8 is slightly smaller than that of the convex column 7, the convex column 7 is pressed into the through hole 8 to form interference fit, and then the binding section 1 and the traction section 2 are reliably connected.

The binding section locking part 6 is provided with a leading-in hole 9 and a leading-out hole 10 for the traction section to pass through, a locking tooth 11 is arranged between the leading-in hole 9 and the leading-out hole 10, and a plurality of anti-return teeth 12 which can be meshed with the locking tooth 11 are uniformly and continuously distributed on the back of the binding section 1. The number of the locking teeth 11 is 1-5, and the tooth pitch is 0.2-4 mm; the number of the anti-rollback teeth 12 is 3-500, and the tooth pitch is 0.2-4 mm. The front face of the lock catch part 6 contacting with the skeleton is an arc-shaped concave curved surface 13, and the arc radius of the concave curved surface 13 is 5-20 mm. The concave curved surface 13 can make the lock catch part fit with the skeleton without binding dead angles. A plurality of anti-sideslip teeth 14 shaped like Chinese character 'pin' are uniformly and continuously distributed on the front surface of the binding section 1 contacting with the skeleton.

The absorbable material for the binding band is one or more of polylactic acid, polycaprolactone, polylactic acid-glycolic acid copolymer, polyglycolic acid, polyhydroxyalkanoate, and polyhydroxybutyrate. The binding section can also be a composite material prepared from the absorbable material and bioactive ceramics or bioactive glass, wherein the bioactive ceramics or bioactive glass is as follows: one or more of hydroxyapatite ceramic, active alumina haydite, beta-tricalcium phosphate porous ceramic or titanium dioxide. The non-absorbable material used for the traction section is one or a mixture of more than one of polyethylene, polypropylene, polyformaldehyde, polycarbonate and acrylonitrile-butadiene-styrene copolymer.

When the utility model is used, the traction head 3 is inserted into the leading-in hole 9 of the lock catch part, and the traction head 3 is pushed to continue to move until the traction head passes through the leading-out hole 10; then, the traction head 3 is pulled to drive the traction part 4 and the binding section 1 to sequentially enter the lock catch part 6, and the bone is continuously tightened along the circumference of the bone to complete the binding of the fracture part. After the tying is completed, the tying band is cut by a tool near the lead-out hole, and the non-tying segment (the non-tying segment includes a non-absorbable pulling segment) is removed. In the binding process, the anti-backing teeth 12 and the locking teeth 11 form a meshing state, so that the binding belt can only be tensioned and cannot be backed, and the continuous and effective binding on the skeleton is ensured.

Claims (10)

1. The utility model provides an absorbable medical combination formula binds area, characterized by, bind the area and include the section of binding and the section of pulling of making by non-absorbable material of making by absorbable material, pull the section and include traction head, traction portion and connecting portion in proper order, the one end of binding the section links to each other with the connecting portion of pulling the section, and the other end of binding the section is equipped with hasp portion the hasp portion is equipped with the import hole and the export hole that the section of pulling passed the import hole and export hole between be equipped with the hasp tooth bind the back evenly and continuously distributed of section have a plurality of can with the tooth looks meshing of hasp prevents returning.

2. The absorbable medical combined tying band as claimed in claim 1, wherein the front surface of the locking part contacting with the object to be tied is an arc concave curved surface, and the arc radius of the concave curved surface is 5-20 mm.

3. The absorbable medical combined tying band as claimed in claim 1, wherein the number of the locking teeth is 1-5, and the pitch is 0.2-4 mm; the number of the anti-rollback teeth is 3-500, and the tooth pitch is 0.2-4 mm.

4. The absorbable medical combined tying band as claimed in claim 1, wherein the tying section has a plurality of anti-sideslip teeth uniformly and continuously distributed on the front surface contacting with the object to be tied.

5. The absorbable medical combined tying band as claimed in claim 1, wherein the width of said pulling head is 0.6 times of the width of the pulling part, and the pulling head is inclined to the front and forms an angle of 15 ° with the pulling part.

6. The absorbable medical combination tying band of claim 1, wherein the connecting portion of the pulling section is connected to the end of the tying section by a pin connection.

7. The absorbable medical combined tying band as claimed in claim 6, wherein the connecting part of the traction section has several convex columns distributed on its surface, and the distance between the convex columns and the edge of the connecting part of the traction section is more than 0.3 mm; a plurality of through holes which can be in interference fit with the convex columns are distributed at the end parts of the binding sections, and the distance between the through holes and the edges of the binding sections is more than 0.5 mm.

8. The absorbable medical combination tie of claim 7, wherein the post is oblong, rectangular, trapezoidal, or circular.

9. The absorbable medical combination tying band of claim 1, wherein the absorbable material of the tying band is one of polylactic acid, polycaprolactone, polylactic acid-glycolic acid copolymer, polyglycolic acid, polyhydroxyalkanoate, and polyhydroxybutyrate.

10. The absorbable medical combination tying band of claim 1, wherein the non-absorbable material of the pulling member is one of polyethylene, polypropylene, polyoxymethylene, polycarbonate, acrylonitrile-butadiene-styrene copolymer.

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