A multifunctional medical thoracic wall reconstructor

Abstract

The present invention discloses a multifunctional medical thoracic wall reconstructor, which includes a rib expander, a thoracic cavity protection sheet and a buckle. The rib expander is implanted between two ribs to expand the distance between the two ribs, and the rib expander is fixed on the ribs by a holding claw. Then, the thoracic cavity protection sheet is implanted between the two rib expanders to protect the thoracic cavity and fix the relative position between the two rib expanders. Both the rib expander and the thoracic cavity protection sheet have different specifications to meet the needs of different patients. This device is simple and practical, which can effectively expand the thoracic cavity of the lung transplantation recipient to adapt to the size of the donor lung, and increase the lung function of the recipient patient and avoid cutting the donor lung. At the same time, the implant has sufficient hardness and toughness, and has good biocompatibility.

Description

Technical Field

[0001] The present invention relates to medical devices, and more particularly to a multifunctional medical thoracic wall reconstructor. Background Art

[0002] Lung transplantation is the only treatment for end-stage lung diseases. Currently, the lung transplantation procedures carried out include single lung transplantation, single lung transplantation combined with contralateral lung volume reduction surgery, and double lung transplantation. Since the concept of brain death has not been widely accepted by the public in China, the lung sources in China mainly come from DCD donor lungs. Moreover, compared with other tissues and organs, lung tissue is more vulnerable to injury, and the excised lungs are not easy to preserve. Clinically, the time between obtaining the donor lungs and transplantation should be shortened as much as possible. For the huge demand in China, the number of donor lungs that can ultimately be used for transplantation is insufficient, and patients have to wait a long time to get the opportunity of lung transplantation. Many end-stage lung disease patients in China die because they cannot wait for the lung source. In addition, patients with pulmonary fibrosis generally show a reduction in lung volume, but after lung transplantation, the thoracic volume of the patients will generally be improved to a certain extent. Some patients get donor lungs with appropriate function but inappropriate size. If the situation of a too large donor lung and a too small recipient thoracic cavity is encountered, the current practice is generally to trim the donor lung and remove a part of the lung to match the size of the recipient's thoracic cavity to meet the urgent need of the patient for the donor lung.

[0003] There are the following problems in trimming the lungs: 1. It prolongs the time of the lungs outside the body; 2. Trimming the lungs increases the difficulty of the surgery and there is also a risk of damaging the lungs; 3. The lung lobe is generally considered to be the smallest anatomical resection unit for surgical treatment, and a smaller lung volume also means a reduction in the lung function of the patient after transplantation. Patients with pulmonary fibrosis generally have a reduction in lung volume, and after lung transplantation, the thoracic area can be restored to a certain extent. Trimming the donor lung during transplantation has adverse factors for improving the quality of life of the patient after surgery. If the thoracic cavity of the patient is reconstructed necessarily and feasibly first, it is beneficial to improve the effect of lung transplantation treatment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to propose a multifunctional medical thoracic wall reconstructor in view of the above-mentioned disadvantages of the prior art. The reconstructor includes a rib expander, a thoracic protector and a buckle. The rib expander is strip-shaped, and first contact plates are provided at both ends of the rib expander. Positioning bosses are symmetrically provided along the central axis on the first contact plates. A positioning groove is provided at the middle position of the rib expander. Claw holders are provided on the first contact plates. Positioning through holes are symmetrically provided along the central axis on the main body of the claw holders. The positioning through holes cooperate with the positioning bosses to fix the position of the rib expander. Claw hooks are provided around the claw holders, and the claw hooks can fix the claw holders on the ribs. A plurality of through holes are evenly distributed on the thoracic protector, and extension plates are provided at both ends of the thoracic protector along the length direction. Buckle through holes are provided on the extension plates. The buckle passes through the positioning groove and the buckle through holes to fix the rib expander and the thoracic protector together;

[0005] In this technical solution, a rib expander is implanted between two ribs to expand the distance between the two ribs. The claw holders are used to fix the rib expander on the ribs. The thoracic protector between two rib expanders is used to protect the thoracic cavity and fix the relative position between the two rib expanders. A plurality of through holes are evenly distributed in the middle section of the thoracic protector, and the through holes contribute to the fusion of the thoracic protector with tissues;

[0006] A further limited technical solution of the present invention is:

[0007] The aforementioned rib expander and claw holders are both formed in one piece. The materials of the rib expander and claw holders are pure titanium, and the material of the thoracic protector is medical-grade Peek. Pure titanium has excellent corrosion resistance, an elastic modulus close to natural bone, and good biocompatibility. Medical-grade Peek has the characteristics of high strength and low dissolution, and has good compatibility with the human body;

[0008] The aforementioned rib expander and thoracic protector are both anatomically designed according to the curvature of the ribs. There are 6 specifications for the rib expander, which are L1 = 30mm, 35mm, 40mm, 45mm, 50mm, 55mm respectively. There are 8 specifications for the thoracic protector, which are L2 = 80mm, 100mm, 120mm, 140mm, 160mm, 180mm, 200mm, 220mm respectively. The rib expanders and thoracic protectors with multiple specifications can be applied to different populations;

[0009] The beneficial effects of the present invention are as follows: A rib expander is implanted between two ribs to expand the distance between the two ribs, and a holding claw is used to fix the rib expander on the rib. A thoracic cavity protection sheet between the two rib expanders is used to protect the thoracic cavity and fix the relative positions between the two rib expanders. Through holes are evenly distributed in the middle section of the thoracic cavity protection sheet, and the through holes contribute to the fusion of the thoracic cavity protection sheet with tissues. The rib expander and the holding claw are both formed in one piece, and the materials of the rib expander and the holding claw are pure titanium. The material of the thoracic cavity protection sheet is medical-grade Peek. Pure titanium has excellent corrosion resistance, an elastic modulus close to that of natural bone, and good biocompatibility. Medical-grade Peek has the characteristics of high strength and low dissolution, and has good compatibility with the human body. The rib expander and the thoracic cavity protection sheet are both anatomically designed according to the curvature of the rib. Among them, there are 6 specifications for the rib expander and 8 specifications for the thoracic cavity protection sheet. The rib expanders and thoracic cavity protectors of various specifications can be applicable to different populations. The entire device can expand the thoracic cavity of the lung transplant recipient to adapt to the size of the donor lung, increase the lung function of the recipient patient, and avoid trimming the donor lung. At the same time, the implant has sufficient hardness and toughness and good biocompatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural view of the present invention;

[0011] Figure 2 is the front view of the present invention;

[0012] Figure 3 is the side view of the present invention;

[0013] Figure 4 is the rear view of the present invention;

[0014] Figure 5 is a schematic structural view of the rib expander in the present invention;

[0015] Wherein: 1 - rib, 2 - rib expander, 2-1 - first contact plate, 2-2 - positioning boss, 2-3 - positioning groove, 3 - holding claw, 3-1 - positioning through hole, 3-2 - claw hook, 4 - thoracic cavity protection sheet, 4-1 - through hole, 4-2 - extension plate, 4-3 - snap through hole, 5 - snap. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following further detailed description is made for the present invention; Embodiment 1

[0017] A multifunctional medical thoracic wall reconstructor provided in this embodiment includes a rib expander 2, a thoracic cavity protection piece 4, and a buckle 5. The rib expander 2 is in a long strip shape, and first contact plates 2-1 are provided at both ends of the rib expander 2. Positioning bosses 2-2 are symmetrically provided on the first contact plates 2-1 along the central axis. A positioning groove 2-3 is provided at the middle position of the rib expander 2. Claw holders 3 are provided on the first contact plates 2-1. Positioning through holes 3-1 are symmetrically provided on the main body of the claw holders 3 along the central axis. The positioning through holes 3-1 cooperate with the positioning bosses 2-2 to fix the position of the rib expander 2. Claw hooks 3-2 are provided around the claw holders 3. The claw hooks 3-2 can fix the claw holders 3 on the rib 1. A plurality of through holes 4-1 are evenly distributed on the thoracic cavity protection piece 4, and extension plates 4-2 are provided at both ends of the thoracic cavity protection piece 4 along the length direction. Buckle through holes 4-3 are provided on the extension plates 4-2. The buckle 5 passes through the positioning groove 2-3 and the buckle through holes 4-3 to fix the rib expander 2 and the thoracic cavity protection piece 4 together;

[0018] In this technical solution, a rib expander is implanted between two ribs to expand the distance between the two ribs. The claw holders are used to fix the rib expander on the ribs. The thoracic cavity protection piece between the two rib expanders is used to protect the thoracic cavity and fix the relative position between the two rib expanders. A plurality of through holes are evenly distributed in the middle section of the thoracic cavity protection piece. The through holes contribute to the fusion of the thoracic cavity protection piece with tissues;

[0019] The aforementioned rib expander 2 and claw holders 3 are both formed in one piece. The materials of the rib expander and the claw holders are pure titanium TA3. The material of the thoracic cavity protection piece 4 is medical-grade Peek. Pure titanium has excellent corrosion resistance, an elastic modulus close to that of natural bone, and excellent biocompatibility. Medical-grade Peek has the characteristics of high strength and low dissolution, and has good compatibility with the human body;

[0020] The aforementioned rib expander 2 and thoracic cavity protection piece 4 are both anatomically designed according to the curvature of the ribs. Among them, the rib expander 2 has 6 specifications, which are L1 = 30mm, 35mm, 40mm, 45mm, 50mm, 55mm respectively. The thoracic cavity protection piece 4 has 8 specifications, which are L2 = 80mm, 100mm, 120mm, 140mm, 160mm, 180mm, 200mm, 220mm respectively. The rib expanders and thoracic cavity protectors of multiple specifications can be applicable to different people.

[0021] The working process of this embodiment:

[0022] Medical staff first select rib expanders and thoracic protection plates of corresponding specifications according to the actual needs of the patient, then place a rib expander A on the adjacent ribs to be operated on, and fix the rib expander A on the ribs with a holding claw. Then use surgical forceps to clamp the claw hook so that the holding claw can hold the ribs tightly. After that, place another rib expander B on the ribs but do not clamp the claw hook temporarily. Then place one end of the thoracic protection plate on the already fastened rib expander A, and fix the thoracic protection plate and the rib amplifier A with a buckle. Then adjust the position of the other rib expander B, and then use a buckle to fix the thoracic protection plate and the other rib expander B. Finally, clamp the claw hook on the corresponding rib fixator B.

[0023] The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the present invention.

Claims

1. A multifunctional medical thoracic wall reconstructor, comprising a rib expander (2), a thoracic protection piece (4) and a buckle (5), characterized in that: The rib expander (2) is strip-shaped, and first contact plates (2-1) are provided at both ends of the rib expander (2). Positioning bosses (2-2) are symmetrically provided on the first contact plates (2-1) along the central axis. A positioning groove (2-3) is provided at the middle position of the rib expander (2). Claw holders (3) are provided on the first contact plates (2-1). Positioning through holes (3-1) are symmetrically provided on the main body of the claw holders (3) along the central axis. The positioning through holes (3-1) cooperate with the positioning bosses (2-2) to fix the position of the rib expander (2). Claw hooks (3-2) are provided around the claw holders (3). The claw hooks (3-2) can fix the claw holders (3) on the rib (1). A plurality of through holes (4-1) are evenly distributed on the thoracic cavity protection piece (4), and extension plates (4-2) are provided at both ends of the thoracic cavity protection piece (4) along the length direction. Clamping through holes (4-3) are provided on the extension plates (4-2). The buckle (5) passes through the positioning groove (2-3) and the clamping through hole (4-3) to fix the rib expander (2) and the thoracic cavity protection piece (4) together. The rib expander is used to expand the distance between two ribs. The through holes of the thoracic cavity protection piece contribute to the fusion of the thoracic cavity protection piece and the tissue. Both the rib expander (2) and the thoracic cavity protection piece (4) are anatomically designed according to the curvature of the rib. Among them, there are 6 specifications for the rib expander (2), which are L1 = 30mm, 35mm, 40mm, 45mm, 50mm, 55mm respectively. There are 8 specifications for the thoracic cavity protection piece (4), which are L2 = 80mm, 100mm, 120mm, 140mm, 160mm, 180mm, 200mm, 220mm respectively. Both the rib expander (2) and the claw holder (3) are integrally formed. The materials of the rib expander (2) and the claw holder (3) are pure titanium (TA3), and the material of the thoracic cavity protection piece (4) is medical-grade Peek.

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