Soft tissue dilator capable of feeding back pressure in real time

Abstract

The utility model relates to the technical field of dilators, in particular to a soft tissue dilator capable of feeding back pressure in real time, which comprises a dilation bag and a catheter, a first connector is arranged on one side of the catheter far away from the dilation bag, the first connector is detachably connected with a second connector, and an infusion tube is arranged at one end of the second connector far away from the first connector. A bottle stopper puncture component is arranged on one side of the infusion tube away from the second joint A waterproof electronic pressure sensor is tightly attached to the inner surface or the outer surface of the expansion bag, has a wireless data transmission function and is made of a flexible material; when the expander is matched with the automatic water injection equipment for use, the expander can be used only by detaching the first joint and the second joint and respectively connecting the first joint and the second joint with a connecting pipe of the automatic water injection equipment, the operation is simple and convenient, and the time is saved; and meanwhile, the waterproof electronic pressure sensor made of the flexible material has a wireless transmission function, so that the trouble of connecting an electric wire can be reduced, and the purpose of transmitting a pressure value can be achieved.

Description

Technical Field

[0001] The utility model belongs to the field of expanders, and particularly relates to a soft tissue expander capable of real-time feedback of pressure. Background Art

[0002] The skin soft tissue expander is a medical device that needs to be frequently used clinically. Its main purpose is to be implanted subcutaneously. After multiple water injections, the skin is slowly expanded and stretched, so that damaged skin can be excised and the wound can be repaired.

[0003] As Figure 1 shown, the currently existing soft tissue expanders mainly include three parts: an expansion capsule, a water injection kettle, and a catheter connecting the expansion capsule and the water injection. Water is injected into the water injection kettle through instruments such as a syringe, and the water in the water injection kettle then flows into the expansion capsule through the catheter, so that the expansion capsule is filled with water and expands; currently, the way to use this expander is to inject water once or twice a week (interval water injection method). However, as early as 1989, Logan S E et al. first reported the continuous tissue expansion technique. Subsequent studies have shown that the amount of skin expanded by continuous tissue expansion for 72 hours is basically the same as that expanded by the traditional interval water injection method for two weeks. Continuous expansion can make the tissue more extended than traditional expansion.

[0004] Therefore, in order to save surgical time, some researchers have currently designed a skin soft tissue expander with a pressure detection function and realized constant pressure automatic water injection through pressure feedback; however, its automatic water injection device, pressure sensor and the main body of the water injection capsule of the expander are integrated design, and this product is only for one-time use, which greatly increases the economic cost of patient treatment.

[0005] In order to solve the problem of high economic cost, Chinese invention patent with publication number CN116327380A discloses an automatic water injection device and application of a pressure feedback skin soft tissue expander, including a waterproof flexible pressure sensor, a waterproof silicone tube wrapped around an electric wire, a water injection main machine, a silicone water supply connecting tube, and a silicone water injection connecting tube; one end of the silicone water injection connecting tube is connected to the water injection main machine, and the other end is connected to the water injection capsule of the expander; the water injection main machine is connected to the waterproof flexible pressure sensor through a waterproof silicone tube wrapped around an electric wire; one end of the silicone water supply connecting tube is connected to the water injection main machine, and the other end is connected to a bag of sterile physiological saline; the device of the present invention is used in cooperation with a skin soft tissue expander, and calculates the pressure of the current expander on the surrounding skin soft tissue according to the amount of water already injected and the total pressure curve of the expander detected in real time, so as to always perform intelligent, automatic, efficient, safe and economic rapid water injection and expansion.

[0006] However, when using this device, it is necessary to Figure 1The shown expander is cut off from the catheter and the water injection kettle part is discarded. Then, the expander is connected to the device through a medical adapter. When installing normal saline on the other side of the device, it is necessary to connect an infusion tube through a medical adapter and then connect a bag of normal saline through the infusion tube. The whole operation is very complicated, and many steps need to be added during use, wasting the time of medical staff. At the same time, the pressure sensor connected by wires is not conducive to the implementation of the operation. Therefore, it is necessary to design a soft tissue expander that can feedback pressure in real time to solve the above problems. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides a soft tissue expander that can feedback pressure in real time to solve the problem that the existing skin soft tissue expander on the market cannot be adapted to the complex operation when cooperating with an automatic water injection device as mentioned in the above background technology.

[0008] To achieve the above object, the technical solution of the present invention is as follows:

[0009] A soft tissue expander that can feedback pressure in real time includes an expansion sac and a catheter connected to the expansion sac. A first joint is provided on the side of the catheter away from the expansion sac. The first joint is detachably connected to a second joint. An infusion tube is provided at one end of the second joint away from the first joint. A bottle stopper puncture assembly is provided on the side of the infusion tube away from the second joint. A waterproof electronic pressure sensor is attached to the inner surface or the outer surface of the expansion sac. The waterproof electronic pressure sensor has a wireless data transmission function and is made of a flexible material.

[0010] As a further improvement of the present invention, the first joint and the catheter are integrally formed.

[0011] As a further improvement of the present invention, a short tube for inserting a connecting tube is provided inside the first joint, and a slot is formed between the outer wall of the short tube and the inner wall of the first joint.

[0012] As a further improvement of the present invention, the second joint and the infusion tube are integrally formed.

[0013] As a further improvement of the present invention, a circular groove for inserting a connecting tube is provided inside the second joint. A cannula is provided at one end of the second joint away from the infusion tube, and the cannula is inserted into the slot.

[0014] As a further improvement of the present invention, a first silicone anti-leakage ring is provided on the inner wall of the short tube.

[0015] As a further improvement of the present invention, a second silicone anti-leakage ring is provided on the inner wall of the second joint at the position of the circular groove.

[0016] As a further improvement of the present utility model, the stopper puncture assembly includes a drip chamber connected to the infusion tube, a puncture needle disposed on the drip chamber, and an air inlet valve disposed on the puncture needle.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] By providing an expansion bladder and a first connector at both ends of the catheter, a second connector and a stopper puncture assembly at both ends of the infusion tube, and detachably assembling the first connector and the second connector, when the dilator is used in cooperation with an automatic water injection device, it only needs to disassemble the first connector and the second connector and connect them to the connecting tubes of the automatic water injection device respectively to start using, which is simple and convenient to operate and saves time;

[0019] By providing a first silicone leak-proof ring on the inner wall of the short tube and a second silicone leak-proof ring on the inner wall of the second connector at the position of the circular groove, the first silicone leak-proof ring and the second silicone leak-proof ring firstly increase the firmness of the insertion of the connecting tube, and secondly can prevent leakage during infusion;

[0020] By providing a stopper puncture assembly, firstly, it can be well connected to the saline bag, and secondly, the drip chamber and the air inlet valve in the stopper puncture assembly can help the liquid in the saline bag to flow out smoothly;

[0021] By providing a waterproof electronic pressure sensor made of a flexible material closely attached to the inner surface or the outer surface of the expansion bladder, and the waterproof electronic pressure sensor has a wireless transmission function, firstly, it can reduce the trouble of connecting wires, and secondly, it can achieve the purpose of transmitting the pressure value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a front view structural schematic diagram of the prior art;

[0024] Figure 2 It is a front view structural schematic diagram of the present utility model;

[0025] Figure 3 It is a cross-sectional structural schematic diagram of the first connector and the second connector of the present utility model;

[0026] Figure 4 It is a front view structural schematic diagram of the stopper puncture assembly of the present utility model;

[0027] Figure 5 This is a schematic diagram of the use of the present utility model.

[0028] Among them, the names represented by the part numbers in the above 5 schematic diagrams are as follows:

[0029] 1. Expansion bladder; 11. Water injection kettle; 12. Waterproof electronic pressure sensor;

[0030] 2. Catheter;

[0031] 3. First joint; 31. Short tube; 32. Slot; 33. First silicone leak-proof ring;

[0032] 4. Second joint; 41. Round groove; 42. Insertion tube; 43. Second silicone leak-proof ring;

[0033] 5. Infusion tube;

[0034] 6. Bottle stopper puncture assembly; 61. Drip chamber; 62. Puncture needle; 63. Air inlet valve;

[0035] 7. Water injection device; 71. Connecting tube; 72. Saline bag. Specific embodiments

[0036] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0037] The present utility model provides the following embodiments:

[0038] A soft tissue expander capable of real-time feedback of pressure, comprising an expansion bladder 1, and a waterproof electronic pressure sensor 12 made of a flexible material is closely attached to the inner surface or the outer surface of the expansion bladder 1. The waterproof electronic pressure sensor 12 has a wireless data transmission function. First, the waterproof electronic pressure sensor 12 can reduce the trouble of connecting wires, and second, it can achieve the purpose of transmitting the pressure value; the expansion bladder 1 is connected to a catheter 2, and a first joint 3 is provided on the side of the catheter 2 away from the expansion bladder 1. The first joint 3 and the catheter 2 are integrally formed; the first joint 3 is detachably connected to a second joint 4, and the second joint 4 and the infusion tube 5 are integrally formed; an infusion tube 5 is provided at one end of the second joint 4 away from the first joint 3, and a bottle stopper puncture assembly 6 is provided on the side of the infusion tube 5 away from the second joint 4; when the expander is not in use, the second joint 4 is inserted into the first joint 3, and when it is needed to use, only the second joint 4 and the first joint 3 need to be separated and used separately;

[0039] A short tube 31 for inserting a connecting tube 71 is provided inside the first connector 3. A slot 32 is formed between the outer wall of the short tube 31 and the inner wall of the first connector 3. A first silicone anti-leakage ring 33 is provided on the inner wall of the short tube 31. When cooperating with the water injection device 7, the connecting tube 71 is inserted into the short tube 31. The first silicone anti-leakage ring 33 on the inner wall of the short tube 31 can first make the insertion of the connecting tube 71 more stable, and secondly can prevent liquid leakage at the connection between the first connector 3 and the connecting tube 71.

[0040] A circular groove 41 for inserting a connecting tube 71 is provided inside the second connector 4. A second silicone anti-leakage ring 43 is provided on the inner wall of the second connector 4 at the position of the circular groove 41. One end of the second connector 4 away from the infusion tube 5 is provided with an insertion tube 42, and the insertion tube 42 is inserted into the slot 32. When the dilator is not in use, the insertion tube 42 is inserted into the slot 32. When cooperating with the water injection device 7, the connecting tube 71 is inserted into the circular groove 41. The second silicone anti-leakage ring 43 can first make the insertion of the connecting tube 71 more stable, and secondly can prevent liquid leakage at the connection between the second connector 4 and the connecting tube 71.

[0041] The bottle stopper puncture assembly 6 includes a drip funnel 61 connected to the infusion tube 5, a puncture needle 62 provided on the drip funnel 61, and an air inlet valve 63 provided on the puncture needle 62. The bottle stopper puncture assembly 6 can first be well connected to the saline bag 72, and secondly, the drip funnel 61 and the air inlet valve 63 in the bottle stopper puncture assembly 6 can help the saline bag 72 to smoothly discharge the liquid.

[0042] Working principle: As Figure 2 shown, when not in use, the second connector 4 is inserted and connected to the first connector 3. As Figure 5 shown, when it is necessary to cooperate with the water injection device 7, first separate the first connector 3 and the second connector 4, then connect the first connector 3 and the second connector 4 to the connecting tubes 71 at both ends of the water injection device 7 respectively, and then insert the puncture head onto the saline bag 72, and the water injection work can be carried out. The whole operation is simple and convenient, saving time.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A soft tissue expander capable of real-time pressure feedback, comprising an expansion sac (1) and a catheter (2) connected to the expansion sac (1), characterized in that The catheter (2) is provided with a first connector (3) on the side away from the expansion bag (1); the first connector (3) is detachably connected to a second connector (4); an infusion tube (5) is provided on the end of the second connector (4) away from the first connector (3); a bottle stopper puncture assembly (6) is provided on the side of the infusion tube (5) away from the second connector (4); a waterproof electronic pressure sensor (12) is tightly attached to the inner surface or the outer surface of the expansion bag (1); the waterproof electronic pressure sensor (12) has a wireless data transmission function and is made of a flexible material.

2. A soft tissue expander capable of real-time pressure feedback according to claim 1, characterized in that: The first joint (3) and the conduit (2) are integrally formed.

3. A soft tissue expander capable of real-time pressure feedback according to claim 2, characterized in that: A circle of short tubes (31) for inserting the connecting tube (71) is arranged inside the first joint (3), and a slot (32) is formed between the outer wall of the short tube (31) and the inner wall of the first joint (3).

4. The soft tissue expander capable of real-time pressure feedback according to claim 3, characterized in that: The second connector (4) and the infusion tube (5) are integrally formed.

5. The soft tissue expander capable of real-time pressure feedback according to claim 4, characterized in that: The second connector (4) is provided with a circular groove (41) for inserting a connecting tube (71), and the second connector (4) is provided with an insert tube (42) at one end away from the infusion tube (5), and the insert tube (42) is inserted into the slot (32).

6. The soft tissue expander capable of real-time pressure feedback according to claim 5, characterized in that: The inner wall of the short tube (31) is provided with a first silica gel anti-leakage ring (33).

7. The soft tissue expander capable of real-time pressure feedback according to claim 6, characterized in that: A second silicone leak-proof ring (43) is provided on the inner wall of the second joint (4) at the position of the circular groove (41).

8. The soft tissue expander capable of real-time pressure feedback according to claim 7, characterized in that: The bottle stopper puncture assembly (6) comprises a drip bucket (61) connected to the infusion tube (5), a puncture needle (62) arranged on the drip bucket (61), and an air intake valve (63) arranged on the puncture needle (62).

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