CN119949912A - Myocardial perforation repair cover - Google Patents
Myocardial perforation repair cover Download PDFInfo
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- CN119949912A CN119949912A CN202411857192.8A CN202411857192A CN119949912A CN 119949912 A CN119949912 A CN 119949912A CN 202411857192 A CN202411857192 A CN 202411857192A CN 119949912 A CN119949912 A CN 119949912A
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Abstract
The invention provides a myocardial perforation repair cover, which belongs to the field of medical appliances and comprises a cover body sealed at the outer side of a pericardium, wherein the cover body is communicated with the cover body and is provided with a liquid inlet pipe, a liquid outlet pipe and a plurality of operation valve ports, the edge of the cover body is sealed and sewed on the pericardium to form a sealed operation space, a video rod and a sewing appliance are arranged through the valve port pipe, the video rod obtains a clear view in the operation space through flushing of the liquid inlet pipe and the liquid outlet pipe at a sewed position, and myocardial perforation is sewed by the sewing appliance.
Description
Technical Field
The invention mainly relates to the medical field, in particular to a myocardial perforation repair cover.
Background
Part of patients within 1 week after myocardial infarction return to myocardial perforation, and symptoms such as pericardial packing, myocardial compression, arrhythmia and heart failure are accompanied, so that the heart failure is caused, and symptoms such as dyspnea, edema and the like appear.
Once myocardial perforation occurs, surgical treatment is the only treatment. The only current surgical scheme is an external circulation lower open chest operation, and once the pericardium is opened during the operation, a large amount of blood is quickly lost, so that the external circulation and blood recovery are necessary. There are risks of major bleeding, re-perforation and complications of extracorporeal circulation, such as clotting dysfunction, infections (including pulmonary infections, blood infections), brain complications (cerebral embolism, cerebral hemorrhage, etc.).
The perforation is found timely, the perforation range is small, the physical condition of the patient is good, and the success rate of the operation of the medical team with abundant experience can reach about 60-80%. If the perforation area is large, serious complications occur (such as surgical rescue after cardiac arrest due to cardiac tamponade), the patient is older and has poor physical tolerance, the success rate may be reduced to below 40%.
In order to improve the success rate of the operation, a clinical urgent need is to provide an operation tool for repairing myocardial perforation without using extracorporeal circulation support, which reduces the operation bleeding, reduces the operation complications and improves the survival rate of patients.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a myocardial perforation repair cover, which comprises a bowl-shaped flexible cover body 1 for forming a sealed operation space by stitching on a heart bag, wherein a sealing membrane ring 11 is arranged on the inner side of the bowl opening edge of the cover body 1, a liquid inlet 12 and a liquid outlet 13 are arranged near the bowl opening edge of the cover body 1 and penetrate through the cover body 1, at least two operation valve ports 14 are arranged on the bowl wall and the bowl bottom of the cover body 1 and penetrate through the cover body 1, and each operation valve port 14 comprises a video rod placement valve port and an operation instrument placement valve port.
Further, a pressure monitoring tube is arranged in the inner cavity of the communication cover body 1.
Further, the device also comprises a flushing pipe 4 used for sealing the liquid inlet 12, a liquid inlet connection ring 41 is movably arranged outside the flushing pipe 4 in a sealing manner, the tail of the flushing pipe 4 is connected with a flushing liquid bag, a flushing pressurizer 43 is arranged outside the flushing liquid bag, the flushing pressurizer 43 pressurizes the flushing liquid bag, and the liquid inlet connection ring 41 is in fit and sealing connection with the liquid inlet 12.
Further, the device also comprises a liquid discharge pipe 5 used for sealing the liquid discharge port 13, a liquid discharge connection ring 52 is movably arranged outside the liquid discharge pipe 5 in a sealing mode, a blood recovery bag 51 is arranged at the tail of the liquid discharge pipe 5, and the liquid discharge connection ring 52 is in fit and sealing connection with the liquid discharge port 13.
Further, a water filtering hole area is arranged through the side wall of the blood recovery bag 51, a water filtering film 54 is arranged in the sealed water filtering hole area, a water filtering opening 55 is arranged on the outer side of the recovery bag 51, the water filtering opening 55 seals the water filtering film 54 area, and a water accumulating bag 56 for storing filtered liquid is arranged in a communicating manner.
Further, the suture locking device also comprises an operation instrument and a suture locking ring, wherein the operation instrument comprises a video rod, an operation scissors, a compression ring, a suture forceps and a pushing ring forceps.
Furthermore, the flushing pipe 4 and the liquid discharge pipe 5 are communicated with each other outside the cover body 1 and are provided with a side-through one-way valve port 44, a matched guide core is arranged, the guide core is arranged in the front section of the flushing pipe 4 or the liquid discharge pipe 5 through the side-through one-way valve port 44, the guide core is a metal rod wrapping a flexible shell and can be shaped, and the tail part of the guide core is provided with a handle.
The suture confining ring comprises a metal ring, an inner cavity is matched with a double-strand suture, a clamp end and a clamp body end are sequentially arranged at the clamp head part of the push ring, a threading hole is formed through the clamp body end, the threading hole is smaller than the inner cavity of the suture confining ring, the suture confining ring is movably inlaid at the clamp end of the push ring, and the length of the clamp end is not greater than the height of the suture confining ring.
Further, the suture confining ring is an elliptic flexible ring, the two ends of the short shaft are provided with inserting grooves, the size of the clamp head of the pushing ring clamp is corresponding to the limit grooves of the suture confining ring, the clamp head of the pushing ring clamp is provided with magnetism, and the pressing ring comprises a probing ring and a handheld handle.
The using method of the myocardial perforation repair cover comprises the following steps:
S1, fixing a cover body 1, namely, cutting a precordial region, exposing pericardium, and sealing and sewing the bowl-shaped edge of the cover body 1 at a proper position of the pericardium;
S2, flushing is established, namely the front section of the flushing pipe 4 is hermetically placed into the cavity of the cover body 1 through the liquid inlet 12, and the tail part of the flushing pipe is connected with the flushing liquid bag 41;
s3, positioning and perforating, namely, embedding a video rod and a surgical scissors into the cover body 1 through the operation valve port 14, cutting open pericardium to expose myocardial surface perforation;
S4, establishing a visual field, namely placing a guide core 61 into the flushing pipe 4 and the liquid discharge pipe 5 through the side-through one-way valve port 6, adjusting the positions of the front end openings of the flushing pipe 4 and the liquid discharge pipe 5 close to myocardial perforation under video of a video rod, and continuously flushing and draining the myocardial perforation;
s5, fixing perforation, namely arranging a compression ring into the cover body 1 through the operation valve port 14, moderately compressing the perforation position, and limiting myocardial activity amplitude of the corresponding perforation position;
S6, suturing perforation, namely, suturing the needle thread by a pair of suture forceps, placing the suture forceps into a cavity of the cover body 1 through an operation valve port 14, leaving the tail part of the suture outside the cover body 1, suturing the myocardial perforation by using the suture forceps, pulling out the suture forceps, taking the head end of the needle thread out of the cover body 1, removing the surgical needle, moderately tightening the head end and the tail end of the suture thread, penetrating a suture confinement ring and a threading hole at the head end of the push ring forceps through the head end and the tail end of the suture thread, penetrating the push ring forceps laterally, pulling the head end and the tail end of the suture thread, pushing the suture confinement ring to the myocardial perforation position by using the push ring forceps, propping the suture thread to close the myocardial perforation by using the push ring forceps, deforming and closing the suture confinement ring by using the clamp, temporarily fastening the suture confinement ring at the suture outside the perforation, and pulling out the push ring forceps to retain the suture thread;
S7, repeatedly closing, namely if a plurality of perforations exist, repeating the above operation, and suturing and closing all myocardial perforations;
S8, reinforcing and closing, namely removing the cover body 1, exposing the myocardial surface under direct vision, removing the suture confinement ring, manually knotting the suture again, closing myocardial perforation, and cutting off redundant line bodies if a plurality of perforation are arranged;
S9, hemostatic suture, namely suturing pericardium, stopping bleeding and suturing the incision;
S10, blood recovery.
The invention has the beneficial effects that:
1. The invention avoids the risk of direct opening of the myocardial perforation and rapid loss of heart blood through the perforation, and can recycle the blood loss liquid at the same time, so that the risk of myocardial perforation repair operation is greatly reduced, thereby improving the treatment rate.
Drawings
FIG. 1 is a schematic view of a cover structure of the present invention;
FIG. 2 is a diagram showing the construction of the present invention in use;
FIG. 3 is a cross-sectional view of the present invention in use;
FIG. 4 is a schematic view of the internal structure of the operating valve port of the present invention;
FIG. 5 is a schematic view of the structure of the flushing pressurizer of the present invention;
FIG. 6 is a schematic view showing the internal structure of the flushing pressurizer of the present invention;
FIG. 7 is a schematic view of the structure of the blood collection bag of the present invention;
FIG. 8 is a schematic view showing the internal structure of the blood collection bag of the present invention;
FIG. 9 is a schematic view of the suture confinement ring structure of the present invention;
FIG. 10 is a schematic view of the structure of the push ring pliers of the present invention;
in the drawing the view of the figure,
1. Cover body, 11 sealing film ring, 12 liquid inlet, 13 liquid outlet, 14 operating valve port
4. A flushing pipe; 41, a liquid inlet adapter ring, 43, a flushing pressurizer, 44, a side-through one-way valve port;
5. The device comprises a liquid discharge pipe, a blood recovery bag, a liquid discharge connection ring, a water filtering film, a water filtering hole, a water accumulating bag and a water accumulating bag.
Detailed Description
The present invention will be further described with reference to the following examples in order to better understand the technical solutions of the present invention and to make the above features, objects and advantages of the present invention more clearly understood. The examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.
Referring to fig. 1,2 and 3, the myocardial perforation repair cover comprises a bowl-shaped flexible cover body 1 for forming a sealed operation space by stitching on a pericardium, wherein a sealing membrane ring 11 is arranged on the inner side of the bowl opening edge of the cover body 1, a liquid inlet 12 and a liquid outlet 13 are arranged adjacent to the bowl opening edge of the cover body 1 and penetrate through the cover body 1, and the cover body 1 is used for constructing a semi-closed space for operation outside the pericardium, wherein the semi-closed space can achieve the capability of maintaining dynamic balance of pressure in the operation. Wherein the sealing membrane ring 11 of the cover body 1 is used for sealing after being sutured and fixed with the pericardium.
At least two operation valve ports 14 are arranged on the bowl wall and bowl bottom of the cover body 1 and penetrate through the cover body 1, wherein the operation valve ports 14 comprise video rod placing valve ports and operation instrument placing valve ports, and are used for placing video rods and operation instruments for operation. In order to facilitate the operation of the attending physician, two operating valve ports 14 are distributed at both sides of the housing 1.
Referring to fig. 3, in order to facilitate the position adjustment of the instrument during the operation, especially in the case where a plurality of positions are required for suturing, the cover 1 is provided in two upper and lower parts, and is hermetically connected by a fitting manner, and in a special case, the positions of the two operation valve ports 14 can be adjusted by rotating the upper and lower sides in a small range.
Referring to fig. 4, in this embodiment, the operation valve port 14 is provided as an operation tube, and a sealing valve membrane including a duckbill valve membrane and a cone valve membrane is provided at a nozzle portion of one end of the operation tube, the duckbill valve membrane being closely adjacent to the cone valve membrane. The duckbill valve membrane is normally closed, the cover body 1 is sealed through the duckbill valve membrane, the duckbill valve membrane can be also opened after the operation instrument is arranged in the conical valve membrane, and the cover body 1 is sealed through the conical valve membrane and the sealing of the operation instrument.
In order to intuitively observe the cover body 1 during operation, a pressure monitoring pipe is arranged in the inner cavity of the communicated cover body 1, the hydraulic pressure in the pressure monitoring pipe is equal to the pressure in the cover body 1, and the pressure intensity of the cover body 1 can be indirectly monitored through a pressure measuring instrument at the other end.
Referring to fig. 2 and 3, in order to further maintain the stability of the pressure in the housing 1, a flushing pipe 4 for sealing the inlet 12 and a drain pipe 5 for sealing the outlet 13 are further included:
the outer seal of the flushing pipe 4 is movably provided with a liquid inlet connection ring 41, the tail part of the flushing pipe 4 is connected with a flushing liquid bag, and a flushing pressurizer 43 is arranged outside the flushing liquid bag, and the flushing pressurizer 43 pressurizes the flushing liquid bag;
after the flushing pipe 4 is inserted into the cover body 1, adjustment is needed, and after the flushing pipe reaches a designated position or flushing position, the liquid inlet 12 is in sealing engagement with the flushing pipe 4 by screwing the liquid inlet engagement ring 41, so that overflow of liquid in the flushing process is reduced. And in order to fit the entering angle of the flushing pipe 4, a section of corrugated pipe for adjusting the entering angle is arranged at the liquid inlet 12.
In this embodiment, the rinse liquid bag is fixed to the outside by external means or the like, and is communicated with the rinse pipe 4, and after the rinse liquid bag is pressurized by the rinse pressurizer 43, the liquid in the rinse liquid bag is discharged into the rinse pipe 4, and finally enters the hood 1.
Among them, the flushing pressurizer 43 may be a medical pressurizer.
Referring to fig. 5 and 6, in the present embodiment, the flushing pressurizer 43 is specifically configured by a base, a "concave" type blocking plate fixed to the base for placing a flushing fluid bag, a squeeze plate adapted to the "concave" type blocking plate, a pushing worm on one side of the squeeze plate away from the blocking plate, a small-sized bi-directional motor connected to and driven by a turbine through a side wall of the pushing worm, and a gear shift switch for controlling the power of the small-sized bi-directional motor. The small-sized bidirectional motor is communicated with an external power supply through the distribution box, and after the external power supply is connected, the gear-shifting switch is started, the small-sized bidirectional motor rotates and is driven to the pushing worm through the turbine, and the worm is pushed to push or pull the extrusion plate forwards or backwards.
In order to prevent the pushing worm and the extrusion plate from falling off, the side wall of the extrusion plate is provided with an imbedding groove which is in limit connection with the round imbedding plate at one end of the pushing worm. Similarly, in order to prevent the squeeze plate and the blocking plate from separating, the squeeze plate side wall is provided with a moving protrusion embedded in a groove of the blocking plate side wall.
Referring to figures 2 and 3, a liquid discharge connection ring 52 is movably arranged on the outer seal of the liquid discharge pipe 5, a blood recovery bag 51 is arranged at the tail part of the liquid discharge pipe 5, and the liquid discharge connection ring 52 is in fit and closed connection with the liquid discharge port 13. In order to fit the entering angle of the liquid discharge pipe 5, a section of corrugated pipe for adjusting the entering angle is arranged at the liquid discharge port 13.
After the liquid discharge pipe 5 is detected into the cover body 1, adjustment is needed, and after the liquid discharge pipe reaches a designated position or a liquid discharge position, the liquid discharge port 13 is in sealing connection with the liquid discharge pipe 5 by screwing the liquid discharge connection ring 52, so that overflow of liquid in the liquid discharge process is reduced. In the present embodiment, the blood collection bag 51 is externally fixed to the outside and communicates with the drain pipe 5.
Referring to fig. 7 and 8, the blood collection bag 51 has a structure in which a water filtering hole area is formed through the side wall of the blood collection bag 51, a water filtering film 54 is formed by sealing the water filtering hole area, a water filtering hole 55 is formed on the outer side of the blood collection bag 51, the water filtering hole 55 seals the water filtering film 54 area, and a water accumulation bag 56 for storing filtered liquid is formed in communication.
The blood of the patient enters the blood recovery bag 51 from the liquid discharge pipe 5, and the residual water in the blood recovery bag 51 is discharged to the water accumulation bag 56 through the water filtering film 54 due to the continuous flushing of the continuous flushing pipe 4 and the continuous drainage of the liquid discharge pipe 5, so that the preliminary filtration is finished. The residual blood can be used as spare blood and selectively returned to the patient.
Especially in the case of a plurality of perforations in the heart muscle, the blood is lost more due to the overlong operation process. Meanwhile, in order to ensure the clear view of the video stick, continuous flushing of the perforation is required, and the blood concentration in the blood collection bag 51 is low. Based on this, the blood in the blood collection bag 51 must be used to the full, i.e., filtered and returned to the patient for life monitoring. In particular, when anticoagulants are used in a large amount, ACT testing is required and protamine is infused. ACT test refers to a test that activates clotting time of whole blood, protamine is used to treat bleeding caused by excessive injection of heparin, a commonly used anticoagulant.
In order to ensure suturing at the myocardial perforation, the device also comprises an operation device and a suture confinement ring, wherein the operation device comprises a video rod, an operation scissors, a compression ring, a suture forceps and a ring pushing forceps.
In order to prevent any one of the flushing pipe 4 and the liquid discharge pipe 5 from reversing and causing accidents in operation, the flushing pipe 4 and the liquid discharge pipe 5 are communicated with each other outside the cover body 1 and provided with side-through one-way valve ports 44, and likewise, the flushing pipe 4 and the liquid discharge pipe 5 are soft in texture and provided with handles for ensuring movement of the flushing pipe 4 and the liquid discharge pipe 5 in the cover body 1 and reducing collision damage, the flushing pipe 4 and the liquid discharge pipe 5 are respectively provided with matched guide cores, the guide cores are arranged in the front section of the flushing pipe 4 or the liquid discharge pipe 5 through the side-through one-way valve ports 44, the guide cores are metal rods wrapping flexible shells and can be shaped, and the tail parts of the guide cores are provided with handles. The flushing pipe 4 and the liquid discharge pipe 5 are indirectly controlled by the tail handle.
Referring to fig. 9 and 10, the suture confinement ring comprises a metal ring, an inner cavity is matched with a double-strand suture, a clamp end and a clamp body end are sequentially arranged at the clamp head part of the push ring, a threading hole is formed through the clamp body end, the threading hole is smaller than the inner cavity of the suture confinement ring, the suture confinement ring is movably inlaid at the clamp end of the push ring, and the length of the clamp end is not greater than the height of the suture confinement ring.
The suture confinement ring is an elliptic flexible ring, the two ends of the short shaft are provided with insertion grooves, the size of the clamp head of the pushing ring clamp is corresponding to the limit grooves of the suture confinement ring, the clamp head of the pushing ring clamp is provided with magnetism, and the compression ring comprises a penetration ring and a hand-held handle.
The heart activity can affect the suturing of the operation, and limited inhibition is needed, so that the consistent effect can be achieved by pressing the pressing ring, namely pressing the penetrating ring, and the conventional suturing operation is carried out subsequently, so that details are omitted.
After the primary threading is finished, the tail end of the surgical suture is extremely threaded and penetrates through the suture confining ring, the suture confining ring is pushed to a suture position through the surgical suture by the ring pushing pliers, and the suture confining ring is extruded and deformed in a clamping mode, so that the primary fixing is finished. Finally, after knotting and fixing, the suture fastening ring is taken down by the ring pushing pliers, and all fixing is completed.
In order to prevent the suture confinement ring from falling off from the push ring clamp, the top end of the push ring clamp is provided with a magnet, and the suture confinement ring is prevented from falling off in a magnetic adsorption mode. The side wall of the inner cavity of the suture fastening ring is also provided with an anti-rebound bulge and an imbedding groove with matched size, and after the suture fastening ring is pressed, the anti-rebound bulge is matched with the imbedding groove, so that the suture line can be further pressed and rebound can be prevented.
The using method of the myocardial perforation repair cover comprises the following steps:
s1, fixing the cover body 1, namely, cutting the precordial region, exposing the pericardium, sealing and sewing the bowl-shaped edge of the cover body 1 at a proper position of the pericardium, and completely covering the perforation position during sewing.
S2, flushing is established, wherein the front section of a flushing pipe 4 is hermetically placed into a cavity of the cover body 1 through a liquid inlet 12, the tail part of the flushing pipe is connected with a flushing liquid bag 41, the front section of a liquid discharge pipe 5 is hermetically placed into the cavity of the cover body 1 through a liquid discharge port 13, the tail part of the liquid discharge pipe is connected with the flushing liquid bag 41, gas of the cover body 1 is emptied, flushing pressure and flow velocity are regulated, and flushing drainage is continuously carried out in the cover body 1, in this step, the flushing drainage needs to maintain dynamic balance, and the pressure in the cover body 1 is ensured to be maintained at a constant value, and the value corresponds to the internal pressure of a perforation position, for example, a value of 0.5-1.2 Kpa can be adopted at a right atrium for maintaining internal and external pressure balance at the perforation position.
S3, positioning perforation, namely, embedding a video rod and a surgical scissors into the cover body 1 through the operation valve port 14, cutting off the pericardium, exposing myocardial surface perforation, pulling out the surgical scissors, adjusting the video rod to find the myocardial perforation position, and determining the pressure in the cover body 1 again before cutting off the pericardium.
S4, establishing a visual field, namely placing a guide core 61 into the flushing pipe 4 and the liquid discharge pipe 5 through the side-through one-way valve port 6, regulating the positions of the front end openings of the flushing pipe 4 and the liquid discharge pipe 5 close to myocardial perforation positions under the video of a video rod, and continuously flushing and draining the myocardial perforation positions, wherein the flushing pipe 4 and the liquid discharge pipe 5 are as close to the perforation positions as possible, but cannot influence the visual field of operation, restoring the red blood staining area to a visual state in a flushing mode, and taking out the guide core 61 after the positions of the flushing pipe 4 and the liquid discharge pipe 5 are debugged, and placing the guide core 61 into the visual state if more perforation positions.
S5, fixing perforation, namely arranging a compression ring into the cover body 1 through the operation valve port 14, moderately compressing the perforation position and limiting the myocardial activity amplitude of the corresponding part of perforation, and because of heart fluctuation, for better suturing, a certain inhibition on the activity is required, and limited limitation can be carried out through the compression ring, thereby assisting the completion of the suturing.
S6, suturing perforation, namely, suturing the needle thread by a pair of suture forceps, placing the suture forceps into a cavity of the cover body 1 through an operation valve port 14, leaving the tail part of the suture outside the cover body 1, suturing the myocardial perforation by using the suture forceps, pulling out the suture forceps, taking the head end of the needle thread out of the cover body 1, removing the surgical needle, moderately tightening the head end and the tail end of the suture thread, penetrating a suture confinement ring and a threading hole at the head end of the push ring forceps through the head end and the tail end of the suture thread, penetrating the push ring forceps laterally, pulling the head end and the tail end of the suture thread, pushing the suture confinement ring to the myocardial perforation position by using the push ring forceps, propping the suture thread to close the myocardial perforation by using the push ring forceps, deforming and closing the suture confinement ring by using the clamp, temporarily fastening the suture confinement ring at the suture outside the perforation, and pulling out the push ring forceps to retain the suture thread;
S7, repeatedly closing, namely if a plurality of perforations exist, repeating the above operation, and suturing and closing all myocardial perforations;
S8, reinforcing and closing, namely removing the cover body 1, exposing the myocardial surface under direct vision, removing the suture confinement ring, manually knotting the suture again, closing myocardial perforation, and cutting off redundant line bodies if a plurality of perforation are arranged;
S9, hemostatic suture, namely suturing pericardium, stopping bleeding and suturing the incision;
s10, blood recovery. In the case of too long a procedure, the patient's blood needs to be returned, and the blood recovery bag 51 can be directly returned after most of the water is filtered out, so as to assist the recovery of the patient's life state. ACT testing is subsequently performed depending on the patient's condition, and protamine is selectively used, due to the use of anticoagulants during surgery.
The above-described embodiments are merely illustrative of the principles of the present application and their effectiveness, and are not intended to limit the present application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications and variations which a person having ordinary skill in the art would accomplish without departing from the spirit and technical spirit disclosed in the present patent application shall be covered by the claims of the present patent application.
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| CN202411857192.8A CN119949912B (en) | 2024-12-17 | 2024-12-17 | Myocardial perforation repair cover |
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| CN215194331U (en) * | 2020-04-23 | 2021-12-17 | 赵成秀 | Clinical whole blood recovery ultrafiltration circulating device |
| CN213789220U (en) * | 2020-04-25 | 2021-07-27 | 中国人民解放军总医院海南医院 | Autologous blood return transfusion device |
| CN213374227U (en) * | 2020-09-04 | 2021-06-08 | 北京京煤集团总医院 | Closed drainage automatic back transfusion device for first aid of pericardiocentesis |
| CN216823583U (en) * | 2021-05-31 | 2022-06-28 | 广东省人民医院 | A kind of fixed forceps for cardiovascular suture needle threading spacer |
| CN217793202U (en) * | 2022-06-01 | 2022-11-15 | 重庆市垫江县人民医院 | A exhaust flowing back hemostasis device for anorectal surgery is postoperative |
| CN116250879A (en) * | 2023-03-02 | 2023-06-13 | 广东省人民医院 | An apical punch and suture locator for a ventricular assist system |
| CN219963603U (en) * | 2023-05-06 | 2023-11-07 | 中国人民解放军空军军医大学 | Wound flushing fluid collection device |
| CN221618236U (en) * | 2023-08-03 | 2024-08-30 | 复旦大学附属中山医院 | A disposable negative pressure isolation cover for tracheal intubation |
| CN117100357A (en) * | 2023-09-08 | 2023-11-24 | 迈得诺医疗科技集团有限公司 | A sterile suction device and its control method |
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