Disposable cardiac pacemaker fixation band

Abstract

This invention relates to the field of medical device technology, specifically to a disposable pacemaker fixation strap, comprising a strap assembly for securing it to the user's chest; an air cushion connected to the strap assembly and corresponding to the pacemaker implantation site; an adjustable airbag assembly for providing an inflation source to the air cushion and adjusting the airflow; and a tubing assembly including a tube connecting the air cushion and the adjustable airbag assembly; the adjustable airbag assembly includes a bladder and a flow adjustment mechanism. This invention allows for stepless adjustment of the airflow and bidirectional sealing of the inlet and outlet ends by rotating a single sealing plug, thereby ensuring stable pressure and preventing pacemaker displacement while enabling precise one-handed operation.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a disposable pacemaker fixation strap. Background Technology

[0002] After pacemaker implantation, external fixation devices are typically used to compress and stabilize the patient's chest to prevent displacement, twisting, or lead dislodgement of devices such as the pulse generator within the subcutaneous pocket. Current techniques often employ elastic bandages, standard fixation straps, or simple pneumatic compression devices.

[0003] These traditional methods have significant limitations: First, the pressure of ordinary straps is uncontrollable and unevenly distributed, which can easily lead to local tissue ischemia or pressure sores, and it is also difficult to effectively suppress the three-dimensional displacement of the pacemaker; Second, although some pneumatic compression fixation straps exist, their pressure adjustment mostly relies on independent valve control, which is cumbersome to operate and requires both hands, making it difficult to achieve precise fine-tuning while wearing the device; Third, the air circuit system has insufficient sealing reliability, and generally uses a single one-way valve or mechanical seal structure, which poses a risk of slow air leakage, cannot maintain stable pressure for a long time, and requires repeated air replenishment, increasing the burden on medical staff. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a disposable pacemaker fixation strap to solve the problem mentioned in the background art of the lack of effective medical devices for restraining pacemakers.

[0005] To achieve the above objectives, the present invention provides the following technical solution. A disposable pacemaker restraint strap, comprising, wherein: A strap assembly for securing the device to the user's chest; an air cushion connected to the strap assembly and corresponding to the pacemaker implantation site; an adjustable airbag assembly for providing an inflation source to the air cushion and adjusting the airflow; a hose assembly comprising a tube connecting the air cushion and the adjustable airbag assembly; the adjustable airbag assembly includes a bladder and a flow adjustment mechanism, the flow adjustment mechanism achieving synchronous opening and closing and stepless adjustment of the air inlet and outlet openings through an integrated threaded drive and linkage sealing structure.

[0006] Preferably, a sealing head is threadedly connected to a metal cylinder fixedly connected to the inner wall of the rear end of the bladder.

[0007] Preferably, the sealing head is provided with an air port, a core rod fixedly connected to one side of the sealing head, a core plug fixed to the core rod, and a front ring fixedly connected to the inner wall of the front end of the bladder.

[0008] Preferably, the front ring component is provided with a second air port, and the sealing head can be driven to move along the axis together with the core rod and the core plug, so as to synchronously change the air intake gap between the sealing head and the rear end of the bladder body, and the air outlet gap between the core plug and the surface of the front ring component.

[0009] Preferably, a sealing ring is provided at the contact point between the sealing head and the rear opening of the bladder body.

[0010] Preferably, the front ring is provided with an extension tube at the connection end of the tube body, and the extension tube cooperates with the inner wall of the front end of the bladder body to fix the tube body by radial compression.

[0011] Preferably, the hose assembly further includes a pressure indicator connected to the hose body.

[0012] Preferably, the strap assembly includes a back strap and a chest strap, the back strap and the chest strap are connected, and both are made of elastic material and have an adjustable length connection structure.

[0013] Preferably, the airbag assembly and the hose assembly are detachably connected.

[0014] Preferably, the air inlet is a through hole annularly formed on the sealing head.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The air cushion inflates to create uniform and controllable pressure on the subcutaneous pacemaker, effectively preventing postoperative pacemaker displacement. It also disperses local pressure, promoting wound healing. The strap assembly is made of elastic material and has an adjustable design, which can flexibly adapt to different patient body shapes, providing a stable and comfortable wearing experience. The disposable sterile design (strap assembly, air cushion, and tubing assembly) eliminates the risk of cross-infection and significantly improves the safety and hygiene of postoperative recovery. The adjustable airbag assembly integrates inflation and precision adjustment functions, allowing operators to perform the squeezing inflation and rotating adjustment of the sealing head to change the air intake with just one hand, without the need for both hands. This integrated design greatly simplifies the operation process, improves adjustment efficiency and convenience, and enables medical staff to quickly and accurately achieve the optimal fixation pressure in the clinical environment. The adjustable airbag assembly adopts a synchronous linkage sealing mechanism between the inlet and outlet ends and the outlet end. When the sealing head is rotated to the closed position, it can simultaneously drive the core plug to fit tightly against the surface of the front ring, achieving a two-way double-layer seal. This structure greatly enhances the sealing performance of the entire air circuit system, ensuring that the pressure inside the airbag can remain stable for a long time in the non-inflated state. It effectively avoids pressure drop and pacemaker displacement caused by accidental air leakage, and its reliability is significantly better than that of the traditional single-point sealing design. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the overall rear structure of the present invention; Figure 3 This is a cross-sectional view of the adjustable airbag assembly of the present invention when it is partially closed. Figure 4 This is a cross-sectional view of the adjustable airbag assembly of the present invention when partially opened; Figure 5 The product usage state of the present invention Figure 1 ; Figure 6 The product usage state of the present invention Figure 2 .

[0017] In the diagram: 1. Strap assembly; 11. Back strap; 12. Chest strap; 2. Adjustable airbag assembly; 21. Airbag body; 22. Metal cylinder; 23. Sealing head; 231. Air port one; 24. Core rod; 241. Core plug; 25. Front ring; 251. Air port two; 3. Hose assembly; 31. Tube body; 32. Pressure indicator; 4. Air cushion. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] One embodiment provided by the present invention: A disposable pacemaker restraint strap, comprising: refer to Figure 1 and Figure 2 As shown, the strap assembly 1 is used to bind the user's chest. The strap assembly 1 includes a back strap 11 and a chest strap 12, which are connected together. Air cushion 4, the air cushion 4 is connected to the shoulder strap 11, the side of the air cushion 4 is connected to the hose assembly 3, and the end of the hose assembly 3 away from the air cushion 4 is connected to the adjustable airbag assembly 2. The hose assembly 3 includes a hose body 31 and a pressure indicator 32. One end of the hose body 31 is connected to the air cushion 4, and the other end is connected to the adjusting airbag assembly 2. The pressure indicator 32 is connected to the hose body 31. refer to Figure 3 and Figure 4As shown, the adjustable airbag assembly 2 includes an airbag body 21. A metal cylinder 22 is fixedly connected to the inner wall of the rear end of the airbag body 21. A sealing head 23 is threadedly connected to the metal cylinder 22. An air port 231 is provided inside the sealing head 23. A core rod 24 is fixedly connected to one side of the sealing head 23. A core plug 241 is fixedly connected to the core rod 24. A front ring 25 is fixedly connected to the inner wall of the front end of the airbag body 21. An air port 251 is provided in the front ring 25.

[0020] In the regulating airbag assembly 2, the sealing head 23 is provided with a sealing ring corresponding to the rear end opening of the airbag body 21. The air port 231 is annularly opened on the sealing head 23. The front end of the airbag body 21 is connected to the tube body 31. The front ring 25 is provided with an extension tube corresponding to the tube body 31. The extension tube is used to cooperate with the front end of the airbag body 21 to squeeze the tube body 31.

[0021] The front ring 25 and the core rod 24 are in sliding contact, and the core plug 241 is in surface fit with the front ring 25.

[0022] It should be noted that the adjustable airbag assembly 2 and the tube body 31 are detachable, making the adjustable airbag assembly 2 a reusable design, primarily for improved economy. The strap assembly 1, air cushion 4, and tube assembly 3, however, are all disposable, ensuring cleaner use in medical settings.

[0023] It should be noted that the appendix Figure 5 and Figure 6 This is a photograph of the device.

[0024] Working principle: During postoperative fixation, the strap assembly 1 is worn on the user's chest, wherein the back strap 11 is wrapped around the user's shoulder, and the chest strap 12 is wrapped around the user's chest cavity. Both the back strap 11 and the chest strap 12 are made of elastic material and have adjustable connection structures (such as Velcro) to adapt to different patient body shapes and provide initial basic fixation.

[0025] The operator repeatedly squeezes and presses the bladder 21 of the adjustable airbag assembly 2. When squeezed, the gas inside the bladder 21 is compressed and delivered to the air cushion 4 via the air port 251 of the front ring 25 and the tube 31. When released, the bladder 21 returns to its original shape, creating negative pressure. External air is drawn into the bladder 21 through the gap between the bladder 21 and the sealing head 23, via the air port 231 on the sealing head 23, preparing for the next inflation. As this process repeats, the air cushion 4 gradually inflates, generating uniform and controllable pressure on the subcutaneous pacemaker pocket, thereby achieving stable fixation.

[0026] The core function of the adjustable airbag assembly 2 is to achieve stepless precision adjustment of the air intake. By rotating the sealing head 23, which engages with the metal cylinder 22 through a threaded connection, the movement of the sealing head 23 along the axial direction can be precisely controlled, thereby changing the gap between it and the rear opening of the airbag body 21: clockwise rotation reduces the gap, increases air intake resistance, and decreases inflation efficiency per unit time, suitable for fine pressure adjustment; counterclockwise rotation loosens the gap, allows for smooth air intake, and improves inflation efficiency, suitable for rapid inflation. The key innovation of this design lies in achieving synchronous linkage sealing between the air intake and exhaust ends and the output end: when the sealing head 23 is rotated to completely close the air intake gap, the core plug 241, connected to it via the core rod 24, also moves forward and fits tightly against the surface of the front ring 25, simultaneously sealing the outlet to the second air port 251. This ensures that the entire air circuit system is sealed at both the air intake and exhaust ends when not in operation, greatly enhancing the pressure retention capability of the airbag 4 and effectively preventing pacemaker displacement caused by pressure leakage. In addition, the extension tube at the end of the front ring 25 fits tightly with the inner wall of the front end of the bladder 21, forming radial compression on the inserted tube 31, thereby enhancing the connection firmness of the tube 31 and eliminating the risk of it falling off or leaking air.

[0027] Throughout the inflation or adjustment process, the operator can monitor the real-time pressure value in the system at any time through the pressure indicator 32 connected to the tube 31, ensuring that the pressure is always within a safe and effective range, achieving stable fixation while ensuring the patient's comfort and safety.

[0028] Compared to the air valve adjustment used in existing technologies, this device allows for one-handed operation of the airbag assembly 2. When operating the airbag assembly 2, for example, the user holds the airbag assembly 2 with their right hand, with the right thumb pointing upwards, the air inlet of the bladder 21 pointing upwards, and the air outlet pointing downwards. The four fingers and palm work together to squeeze the bladder 21, while the thumb rests on the surface of the sealing head 23. The sealing head 23 can be rotated by the thumb, thereby adjusting the inflation of the airbag assembly 2 and stepless adjustment. This can be controlled with one hand, while the other hand can be used to adjust the strap assembly 1 or the hose assembly 3.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A disposable pacemaker fixation strap, characterized in that: The strap assembly (1) is used to bind the user's chest; An air cushion (4) is attached to the strap assembly (1) and corresponds to the pacemaker implantation site; Adjustable airbag assembly (2) is used to provide an inflation source for the air cushion (4) and adjust the air intake flow rate; The hose assembly (3) includes a tube (31) connected between the air cushion (4) and the regulating airbag assembly (2). The regulating airbag assembly (2) includes an airbag body (21) and a flow regulating mechanism. The flow regulating mechanism achieves synchronous opening and closing and stepless adjustment of the air inlet opening and the air outlet opening through an integrated threaded transmission and linkage sealing structure.

2. The disposable cardiac pacemaker fixation band of claim 1, wherein: A metal cylinder (22) is fixedly connected to the inner wall of the rear end of the bladder (21), and a sealing head (23) is threadedly connected to the metal cylinder (22).

3. The disposable cardiac pacemaker fixation band of claim 2, wherein: The sealing head (23) is provided with an air port (231), a core rod (24) fixedly connected to one side of the sealing head (23), a core plug (241) fixed to the core rod (24), and a front ring (25) fixedly connected to the inner wall of the front end of the bladder (21).

4. The disposable cardiac pacemaker fixation band of claim 3, wherein: The front ring (25) is provided with an air port two (251). The sealing head (23) can be driven to move along the axis together with the core rod (24) and the core plug (241) to synchronously change the air intake gap between the sealing head (23) and the rear end of the bladder (21), and the air outlet gap between the core plug (241) and the surface of the front ring (25).

5. The disposable cardiac pacemaker fixation band of claim 4, wherein: A sealing ring is provided at the contact point between the sealing head (23) and the rear opening of the bladder (21).

6. The disposable cardiac pacemaker fixation band of claim 4, wherein: The front ring (25) is provided with an extension tube at the connection end of the tube body (31). The extension tube cooperates with the inner wall of the front end of the bladder (21) to fix the tube body (31) by radial compression.

7. The disposable cardiac pacemaker fixation band of claim 1, wherein: The hose assembly (3) also includes a pressure indicator (32) connected to the hose body (31).

8. The disposable cardiac pacemaker fixation band of claim 1, wherein: The strap assembly (1) includes a back strap (11) and a chest strap (12), the back strap (11) and the chest strap (12) are connected, and both are made of elastic material and have an adjustable length connection structure.

9. The disposable cardiac pacemaker fixation band of claim 1, wherein: The airbag assembly (2) and the hose assembly (3) are detachably connected.

10. The disposable cardiac pacemaker fixation band of claim 3, wherein: The air inlet (231) is a through hole that is annularly opened on the sealing head (23).

Images