CN216724707U - Degradable fixing device for rib fracture - Google Patents

Abstract

A degradable fixing device for rib fracture comprises an internal thoracic splint and an external thoracic splint, wherein the internal thoracic splint and the external thoracic splint are strip-shaped and flaky absorbable plates, and the longitudinal and cross sections of the absorbable plates are both arc-shaped and bent. The thorax inner splint middle part transversely sets up the net that a plurality of preforming and equidistance distribute, all vertically sets up the protection side post between the adjacent net, and the protection side post runs through thorax inner splint and protruding its upper surface and lower surface, and the through-hole is established to protection side post center pin, the absorbable stylolite of through-hole internal fixation, the suture needle is all fixed at the outer both ends that extend of suture. The middle part of the external thoracic splint is transversely provided with a plurality of preformed grids distributed at equal intervals, a protection side column is longitudinally arranged between every two adjacent grids, the protection side column penetrates through the external thoracic splint and protrudes the upper surface and the lower surface of the external thoracic splint, and a limiting clamping groove is axially formed in the center of the protection side column. The device is convenient to operate, tightly wraps the fractured ribs, has good stability, saves the using amount of high polymer materials, does not need to be detached, and has strong universality.

Description

Degradable fixing device for rib fracture

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a degradable fixing device for rib fracture.

Background

The ribs are important components of the thorax, mainly maintaining the respiratory movement of the chest and protecting the internal organs in the cavity. Rib fracture is a common chest injury in clinic, and accounts for more than 50% of chest injury diseases, wherein the most of the multiple rib fractures can cause abnormal respiratory movement, mediastinal swing and respiratory cycle failure of patients, and the patients can be threatened to life in severe cases.

Currently, multiple rib fractures are generally treated by an internal fixation operation, and the fixation device of the operation comprises: the shape memory alloy embracing fixator comprises a shape memory alloy embracing fixator, a pure titanium claw-shaped bone fracture plate and a porous screw reconstruction steel plate. However, such fixing devices are inconvenient to operate and have poor stabilizing effect on reduction fracture, and the patient still needs a secondary operation to remove the fixing device after the rib is healed, which again affects the physiological and psychological health of the patient. If the absorbable screw is used, the absorbable screw cannot be applied to the condition of comminuted rib fracture.

Therefore, there is a need for a degradable fixation device for rib fracture to solve the problems of inconvenient operation, poor stability, removal injury and low versatility in the prior art.

Disclosure of Invention

The utility model aims to provide a degradable fixing device for rib fracture, which has simple structure, convenient operation, good stability and no need of disassembly, and in order to achieve the aim, the utility model is realized by the following technical scheme:

the degradable fixing device for rib fracture comprises an intrathoracic splint and an extrathoracic splint, wherein the intrathoracic splint and the extrathoracic splint are both strip-shaped sheet-shaped absorbable plates, and the longitudinal and cross sections of the intrathoracic splint are both arc-shaped bends.

The thorax splint middle part transversely sets up the net that a plurality of preforming and equidistance distribute, all vertically sets up the protection side post between the adjacent net, the protection side post runs through thorax interior splint and protruding its upper surface and lower surface, the through-hole is established to protection side post center pin, the absorbable stylolite of through-hole internal fixation, the suture needle is all fixed at the outer both ends that extend of suture. The utility model discloses a chest outer splint, including chest outer splint, protection side post, spacing draw-in groove is seted up to protection side post central axial, the net that a plurality of preforming and equidistance distribute is transversely set up in the middle part of the chest outer splint, all vertically sets up the protection side post between the adjacent net, the protection side post runs through chest outer splint and protruding its upper surface and lower surface, spacing draw-in groove is seted up to protection side post central axial.

Furthermore, the thoracic cavity inner splint and the thoracic cavity outer splint are both rectangular sheet structures, the outward bending surface of the thoracic cavity inner splint is a rib contact surface of the thoracic cavity inner splint, and the inward bending surface of the thoracic cavity outer splint is a rib contact surface of the thoracic cavity outer splint.

Furthermore, the rib contact surface of the intrathoracic splint and the rib contact surface of the extrathoracic splint are both designed to be rough surfaces.

Furthermore, the thickness of the intrathoracic splint and the extrathoracic splint is 1.0-2.8 mm.

Further, the length of the outward extending section of the suture line is 6-16 cm.

Compared with the prior art, the degradable fixing device for rib fracture has the following advantages:

through the device, a doctor can complete the fixation operation of rib fracture under the thoracoscope condition, the wound is small, and the operation is simpler, more convenient and safer. The doctor tightly wraps the rib of the patient with the chest cavity and the outer splint by tensioning the absorbable suture, improves the stability of the fixation of the fracture part, is beneficial to the healing after the operation, and is even suitable for various special fracture conditions such as comminuted fracture and the like. Wherein, the protective side columns of the chest cavity and the external splint effectively avoid the injury of intercostal nerves and intercostal arteries caused by the suture line directly contacting the ribs in the operation process. And after the ribs are healed, the thoracic cavity and the external splint do not need to be disassembled, thereby avoiding the injury and pain of the patient caused by the secondary operation.

Thorax, outer splint, net and protection side post all adopt absorbable macromolecular material, and the latticed fretwork design of device both practiced thrift macromolecular material's use amount, reduce manufacturing cost, also can reduce the interference to unnecessary fixed area, play better healing effect to rib fracture, when carrying out comminuted fracture fixed, still carry out visual operation through the net, the commonality is strong.

Drawings

Fig. 1 is a front view of the intrathoracic splint of the present invention.

Fig. 2 is a rear view schematically showing the structure of the intrathoracic splint of the present invention.

Fig. 3 is a bottom view of the intrathoracic splint of the present invention.

Fig. 4 is a front view of the extrathoracic splint of the present invention.

Fig. 5 is a rear view schematically showing the structure of the extrathoracic splint of the present invention.

Fig. 6 is a top view of the extrathoracic splint of the present invention.

In the figure: a chest cavity inner splint 1; a rib contact surface 2 of the intrathoracic splint; a protective jamb 3; a through hole 4; a suture 5; a suture needle 6; an extrathoracic splint 7; a rib contact surface 8 of the extrathoracic splint; a limiting clamping groove 9; a grid 10.

Detailed Description

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

As shown in fig. 1-6, the degradable fixing device for rib fracture comprises an internal thoracic splint 1 and an external thoracic splint 7, wherein the internal thoracic splint 1 and the external thoracic splint 7 are both sheet-shaped strip-shaped absorbable plates, the longitudinal and cross sections of the internal thoracic splint 1 and the external thoracic splint 7 are both arc-shaped, and the arc-shaped bends of the internal thoracic splint 1 and the external thoracic splint 7 are matched with the profile arc of the rib, so that the fitting property of the internal thoracic splint 1 and the external thoracic splint 7 with the rib is effectively improved, and the device is easy to fix and not easy to shift. The grid 10 that a plurality of preforming and equidistance distribute is transversely set up in 1 middle part of splint in the thorax, and when the attached rib surface of 1 of splint in the thorax, grid 10 can reduce the interference to unnecessary fixed area, plays better healing effect to rib fracture, both material saving's use amount reduces manufacturing cost, when carrying out comminuted fracture fixed, still carries out visual operation through grid 10, and the commonality is strong.

The protective side columns 3 are longitudinally arranged between the adjacent grids 10, the protective side columns 3 penetrate through the intrathoracic splint 1 and protrude the upper surface and the lower surface of the intrathoracic splint, and the intercostal nerves and intercostal arteries are tightly attached to the anatomical shape of the ribs, so the protective side columns 3 effectively avoid the injury of the intercostal nerves and the intercostal arteries caused by the direct contact of the suture lines 5 with the ribs in the operation process. A through hole 4 is formed in the central shaft of the protective side column 3, an absorbable suture 5 is fixed in the through hole 4, suture needles 6 are fixed at two ends of the suture 5 extending outwards, the suture 5 penetrates through the rib to ensure that the splint 1 in the thoracic cavity and the rib can not move relatively, the absorbable suture 5 can be gradually degraded along with the healing of the rib, degradation products are harmless to the human body, and the tissue compatibility is good.

The middle part of the external thoracic splint 7 is transversely provided with a plurality of preformed grids 10 distributed at equal intervals, a protection side column 3 is longitudinally arranged between every two adjacent grids 10, the protection side column 3 runs through the external thoracic splint 7 and protrudes the upper surface and the lower surface of the external thoracic splint, and a limiting clamping groove 9 is axially arranged at the center of the protection side column 3, so that the suture 5 can be clamped and fixed. Splint 1 and outer splint 7 of thorax are rectangle sheet structure in the thorax, and splint 1's the outside curved surface in the thorax is splint rib contact surface 2 in the thorax, and the incurve curved surface of outer splint 7 in the thorax is splint rib contact surface 8 outside the thorax, and splint rib contact surface 2 and outer splint rib contact surface 8 are the design of rough surface in the thorax, prevent the slip of fixing in-process splint through increasing frictional force. The intrathoracic splint 1, the extrathoracic splint 7, the grid 10 and the protection side post 3 adopt absorbable polymer materials, such as poly-L-lactic acid, polyacetate and the like, the materials have high hardness and light weight, and degradation products are harmless to human bodies, the histocompatibility is good, the intrathoracic splint 1 and the extrathoracic splint 7 do not need to be disassembled after the ribs are healed, and the injury and pain of patients caused by secondary operations are avoided.

The length and width of the intrathoracic splint 1 and the extrathoracic splint 7 can be customized according to the fracture condition of the rib and the width of the rib measured by CT of the patient, the length is 4-10cm, the width is 2-4cm, and the thickness is 1.0-2.8 mm.

The length and the width of each grid 10 are respectively 0.2cm, the total length of each grid 10 respectively accounts for 70-80% of the length of the intrathoracic splint 1 and the extrathoracic splint 7, and the total width of each grid 10 respectively accounts for 70-80% of the width of the intrathoracic splint 1 and the extrathoracic splint 7.

The length of the outward extending section of the suture 5 is 6-16 cm.

The operation process is as follows:

before operation, the chest surgeon can cut the intrathoracic splint 1 and the extrathoracic splint 7 to the optimal length by scissors according to the fracture condition of the patient.

During thoracoscopic surgery, a patient is in an anesthetic state, and a doctor looks directly to find a rib fracture part with the assistance of a thoracoscope. Firstly, transversely placing an inner thoracic cavity splint 1 in a thoracic cavity, fixing the inner thoracic cavity splint to the lower edge of a rib at a fracture position, determining that the inner thoracic cavity splint 1 is tightly attached to the rear part of the rib, at the moment, leading suture lines 5 extending from protective side posts 3 to be drawn out of the thoracic cavity from the rear part of the rib through the upper part or the lower part under the guidance of suture needles 6, taking other remaining suture lines 5 by the same method, respectively distributing the suture lines 5 above, adjacent parts, below and adjacent parts of the rib fracture, then placing an outer thoracic cavity splint 7 outside the thoracic cavity, fixing the position of the inner thoracic cavity splint 1 correspondingly, clamping the suture lines 5 above and below the inner thoracic cavity splint 1 to limit clamping grooves 9 of the outer thoracic cavity splint 7, relatively tensioning the suture lines 5, enabling the inner thoracic cavity splint 1 and the outer thoracic cavity splint 7 to be attached to the fracture position, and finally tightly wrapping the patient's rib by completely tensioning the suture lines 5 when the splint already holds the fracture position, and cutting off the connected suture needle 6 and the redundant suture 5, and finishing the fracture reduction and fixation.

The degradable fixing device for rib fracture has the advantages of simple structure, convenience in operation, good stability, no need of disassembly and strong universality.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the spirit of the present invention, and these modifications and improvements should also be considered as within the scope of the present invention.

Claims (5)

1. A degradable fixing device for rib fracture, includes interior splint of thorax and extrathoracic splint, its characterized in that: the intrathoracic splint and the extrathoracic splint are both strip-shaped sheet-shaped absorbable plates, and the longitudinal and cross sections of the intrathoracic splint are both arc-shaped;

the middle part of the intrathoracic splint is transversely provided with a plurality of preformed grids which are distributed at equal intervals, protective side columns are longitudinally arranged between every two adjacent grids, the protective side columns penetrate through the intrathoracic splint and protrude the upper surface and the lower surface of the intrathoracic splint, the central shaft of each protective side column is provided with a through hole, an absorbable suture line is fixed in each through hole, and suture needles are fixed at both ends of the suture line which extend outwards;

the utility model discloses a chest outer splint, including chest outer splint, protection side post, spacing draw-in groove is seted up to protection side post central axial, the net that a plurality of preforming and equidistance distribute is transversely set up in the middle part of the chest outer splint, all vertically sets up the protection side post between the adjacent net, the protection side post runs through chest outer splint and protruding its upper surface and lower surface, spacing draw-in groove is seted up to protection side post central axial.

2. The degradable fixation device for rib fractures of claim 1, wherein: the thoracic cavity inner splint and the thoracic cavity outer splint are both rectangular sheet structures, the outward bending surface of the thoracic cavity inner splint is a rib contact surface of the thoracic cavity inner splint, and the inward bending surface of the thoracic cavity outer splint is a rib contact surface of the thoracic cavity outer splint.

3. The degradable fixation device for rib fractures of claim 2, wherein: the rib contact surface of the intrathoracic splint and the rib contact surface of the extrathoracic splint are both designed into rough surfaces.

4. The degradable fixation device for rib fractures of claim 3, wherein: the thickness of the intrathoracic splint and the extrathoracic splint is 1.0-2.8 mm.

5. The degradable fixation device for rib fractures of claim 1, wherein: the length of the outward extending section of the suture line is 6-16 cm.

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