Anhydrous alcohol injection device for endocardium

Abstract

The utility model discloses an endocardium anhydrous alcohol injection device which comprises an injection barrel, a limiting baffle is fixedly arranged in the injection barrel, a metal rod is arranged in a through hole in a penetrating mode, an injection needle is installed at the end of the metal rod, a spiral is arranged on the outer side of the injection needle, and the injection needle is communicated with the metal rod. One end of the injection cylinder body is provided with an injection end head, one end of the injection cylinder body, which is far away from the injection needle head, is fixedly provided with a sealing tube, the front end of the sealing tube is provided with a sealing tube end head, and the interior of the metal rod is provided with a cavity. Anhydrous alcohol is injected into the area through the injection needle, local ventricular muscle necrosis is caused, left ventricular outflow tract obstruction is relieved, hidden dangers such as trauma size and complications can be effectively controlled, and safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an endocardial anhydrous alcohol injection device. Background Art

[0002] Hypertrophic obstructive cardiomyopathy is a common clinical condition. Hypertrophic ventricular septum induces SAM sign, leading to severe left ventricular outflow tract obstruction, which can cause chest pain, syncope, and even sudden death. Currently, treatments such as medication, surgical resection, and radiofrequency ablation are ineffective.

[0003] Chinese patent CN219595548U discloses a screw-in intramyocardial perfusion catheter. The screw-in head allows the user to rotate the perfusion catheter so that the catheter is screwed into the myocardium for fixation, thereby reducing the displacement of the perfusion catheter. The multiple perfusion holes allow the perfusion catheter to be perfused with anhydrous alcohol after being screwed into the ventricular septal myocardium, causing dehydration and necrosis of the local myocardium with hypertrophic obstruction, achieving deeper hypertrophic myocardial damage, thereby reducing outflow tract obstruction and transvalvular pressure difference.

[0004] In the above-described approach, the catheter tip is positioned perpendicular to the ventricular septum and screwed into the ventricular septum via the inferior vena cava approach. This is very difficult to perform, and the resistance to injecting anhydrous alcohol through the perfusion holes around the catheter is significant. Furthermore, it is difficult to precisely control the alcohol injection dose and the location of the injury, thus affecting the therapeutic effect. Therefore, the present invention proposes an endocardial anhydrous alcohol injection device to address the above-mentioned issues. Utility Model Content

[0005] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide an endocardial anhydrous alcohol injection device.

[0006] To achieve the above-mentioned purpose, the utility model provides an endocardial anhydrous alcohol injection device, comprising an injection cylinder, a limit baffle fixedly arranged in the injection cylinder, a through hole formed on the limit baffle, and a metal rod passing through the through hole, the interior of the metal rod is arranged as a cavity, an injection needle is installed at the end of the metal rod, the injection needle and the metal rod are connected to each other, a fixing plate is provided at one end of the metal rod close to the injection needle, a spiral is fixedly provided on the side of the fixing plate away from the limit baffle, the spiral is sleeved on the outside of the injection needle, and its extended length is the same as the extended length of the free end of the injection needle.

[0007] Furthermore, an injection tip is provided at one end of the injection cylinder body, and an opening is provided on the injection tip for the spiral and the injection needle to pass through. A sealing tube is fixedly provided at the other end of the injection cylinder body away from the injection needle, and a sealing tube tip is provided at the outer end of the sealing tube.

[0008] Furthermore, the spiral is fixedly connected to one end of the metal rod, a rotating column is passed through the end of the sealing tube, the inner end of the rotating column is fixedly connected to the other end of the metal rod, and the interior of the rotating column is provided with a cavity. The rotation of the rotating column drives the spiral and the injection needle to retract into the injection barrel, or pass through.

[0009] Furthermore, the spiral is fixedly connected to the injection tip, and the free end of the spiral extends outward from the outer end surface of the injection barrel, and the extension distance is the same as the length of the injection needle.

[0010] Furthermore, the injection needle is detachably fixedly arranged on the end of the metal rod.

[0011] Furthermore, the sealing tube end is spiral-shaped, and the rotating column is made of stainless steel.

[0012] Furthermore, a guide wire for shaping is detachably inserted into the rotating column and the metal rod, and a handle is fixedly provided at the outer end of the guide wire.

[0013] Furthermore, it also includes a clamping tool matched with the rotating column, and a clamping portion for the clamping tool to clamp is formed on the rotating column.

[0014] Furthermore, the clamping tool includes two clamps, the two clamps are symmetrically arranged, an elastic block is fixedly arranged between the two clamps, the elastic block is located at the upper end of the clamp, and a hand handle is fixedly arranged at the bottom of the clamp.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. Through the provided structures of the injection needle, metal rod, sealing tube, rotating column and clamping tool, the spiral follows the metal rod and shrinks into the injection barrel before injection. When injection is required, the clamping tool clamps the rotating column and rotates the rotating column, which drives the metal rod to rotate, and simultaneously drives the spiral at the front end of the metal rod to be screwed vertically into the hypertrophic ventricular septum area through the superior vena cava, playing an anchoring role. At the same time, the injection needle is also inserted into the hypertrophic ventricular septum area. When anhydrous alcohol is injected through the injection needle, the resistance is relatively small, the damage range is controllable, and the hidden dangers such as large trauma and complications are effectively controlled, with higher safety.

[0017] 2. Through the provided limit baffle, sealing tube and spiral structures, when the spiral is fixedly connected to the injection end, the spiral extends outward from the injection barrel, and the extension distance is the same as the length of the injection needle. When injection is needed, it is only necessary to manually rotate the position of the injection end to insert the spiral together with the injection needle into the hypertrophic ventricular septum area. It can be screwed into the ventricular septum and anchored at the same time as the injection needle is simultaneously inserted into the area to be injected, which is easy to operate, accurate in positioning, and improves the efficiency of injection;

[0018] 3. The guide wire is set and passed through the rotating column and the metal rod, which can play a shaping role for the entire injection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the solutions in the present invention, a brief introduction is given below to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention when the spiral is extended;

[0021] Figure 2 This is a schematic diagram of the structure of the spiral contraction of the first embodiment provided by the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the clamping tool provided by the utility model

[0023] Figure 4 This is a structural diagram of the second embodiment provided by the present utility model;

[0024] Figure 5 This is a schematic diagram of the injection device of the present invention piercing the interventricular septum;

[0025] Description of reference numerals:

[0026] 1. Injection barrel; 101. Outer sheath; 2. Limit baffle; 3. Metal rod; 4. Injection tip; 5. Spiral; 6. Fixing plate; 7. Injection needle; 701. Syringe; 8. Sealing tube; 9. Sealing tube tip; 10. Rotating column; 11. Clamping tool; 111. Elastic block; 112. Clamping plate; 113. Handle; 12. Guide wire; 13. Grip. DETAILED DESCRIPTION

[0027] The following detailed description of the preferred embodiments of the present invention is provided in conjunction with the accompanying drawings to make the advantages and features of the present invention more easily understood by those skilled in the art, thereby more clearly defining the scope of protection of the present invention. Obviously, the described embodiments are only a portion of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are also within the scope of protection of the present invention.

[0028] The terms "including" and "having," as well as any variations thereof, in the specification and claims of this utility model and the accompanying drawings are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the specification and claims of this utility model and the accompanying drawings are used to distinguish between different items, not to describe a specific order.

[0029] Example 1

[0030] See also Figure 1-3 , an endocardial anhydrous alcohol injection device, comprising an injection barrel 1, a limit baffle 2 fixedly arranged in the injection barrel 1, a through hole provided on the limit baffle 2, and a metal rod 3 passing through the through hole, the interior of the metal rod 3 is a cavity, an injection needle 7 is installed at the end of the metal rod 3, the injection needle 7 is detachably fixed at the end of the metal rod 3, the injection needle 7 and the metal rod 3 are connected to each other, anhydrous alcohol can be injected through the injection needle 7, precise injection can be achieved through the injection needle, the radiation area is small, accurate injection can be achieved by controlling the injection volume, and overinjection, large trauma, etc. will not occur.

[0031] A fixing plate 6 is mounted on the end of the metal rod 3 near the injection needle 7. A spiral 5 is fixed to the side of the fixing plate 6 away from the stopper 2. The spiral 5 is positioned outside the injection needle 7 and extends to the same length as the free end of the injection needle 7. The spiral 5 is designed to penetrate the hypertrophic ventricular septum, and the injection needle 7 is of the same length as the spiral 5, enabling simultaneous insertion, facilitating accurate injection, and effectively controlling the injection location.

[0032] An injection tip 4 is provided at one end of the injection barrel 1, and an opening is opened on the injection tip 4 for the spiral 5 and the injection needle 7 to pass through. A sealing tube 8 is fixedly provided at the other end of the injection barrel 1 away from the injection needle 7, and a sealing tube tip 9 is provided at the outer end of the sealing tube 8. The sealing tube 8 provides a protective space for the metal rod 3. The length of the sealing tube 8 and the metal tube can be very long, for example, about 40 cm, or other sizes that can meet the use requirements.

[0033] Regarding the positions of the spiral 5 and the injection needle 7, there can be various arrangements, such as Figure 2As shown, in one embodiment of this new use, the spiral 5 is fixedly connected to one end of the metal rod 3, and a rotating column 10 is inserted into the sealing end 9. The inner end of the rotating column 10 is fixedly connected to the other end of the metal rod 3. The rotating column 10 is hollow and made of stainless steel. The sealing end 9 is spiral-shaped. The rotating column 10 rotates to drive the spiral 5 and the injection needle 10 to retract into the injection barrel 1 or pass out. That is, under normal conditions, the spiral 5 and the injection needle 10 are retracted and positioned within the injection barrel 1 following the metal rod 3. When the spiral 5 needs to be inserted into the hypertrophic interventricular septum area, the rotating column 10 is operated to rotate and insert the spiral 5.

[0034] In order to operate the rotating column 10, a clamping tool 11 is also included that is matched with the rotating column 10. A clamping portion for the clamping tool 11 to clamp is formed on the rotating column 10. The clamping tool 11 clamps and rotates the rotating column 10. The rotation of the rotating column 10 drives the spiral 5 to rotate forward. The rotation and advancement of the spiral 5 drives the injection needle 7 to move forward synchronously to complete the insertion and injection actions.

[0035] Specifically, the clamping tool 11 includes two splints 112, and the two splints 112 are symmetrically arranged. An elastic block 111 is fixedly arranged between the two splints 112, and the elastic block 111 is located at the upper end of the splint 112. A hand-held handle 113 is fixedly arranged at the bottom of the splint 112. When injection is required, the clamping tool 10 clamps the rotating column 10 (press the two hand-held handles 113 closer relative to the inner side, and then release the hand-held handle 113 after the upper ends of the two splints 112 clamp the rotating column 10).

[0036] A guide wire 12 is inserted into the rotating column 10 and the metal rod 3, and a grip 13 is fixed to the outer end of the guide wire 12. The guide wire 12 is inserted into the rotating column 10 and the metal rod 3, which can shape the entire injection device. In order to facilitate smooth transmission during the insertion process, an outer sheath 101 is generally required to be installed on the outside of the injection barrel 1. The outer sheath 10 plays a role in transmission. The utility model is inserted through the superior vena cava and supported by the outer sheath 101. Figure 5 The injection needle 7 can be screwed into and anchored in the hypertrophic ventricular septum area, and anhydrous alcohol can be injected into the area through this injection needle 7. This method can ensure the accuracy of the injection area and cause effective local myocardial damage. The damage range is controllable, avoiding excessive diffusion of anhydrous alcohol, effectively controlling hidden dangers such as large trauma and complications, and is safer.

[0037] Example 2

[0038] Compared with the first embodiment, the installation position of the spiral 5 and the injection needle is different. Figure 4, an endocardial anhydrous alcohol injection device, a limit baffle 2 is fixedly set in the injection barrel 1, the side wall of the limit baffle 2 is provided with a through hole, and a metal rod 3 is passed through the through hole, the interior of the metal rod 3 is a cavity, an injection needle 7 is installed at the end of the metal rod 3, a spiral 5 is provided on the outside of the injection needle 7, and the injection needle 7 and the metal rod 3 are connected.

[0039] An injection tip 4 is provided at one end of the injection barrel 1, and a sealing tube 8 is fixedly provided at the end of the injection barrel 1 away from the injection needle 7. A sealing tube tip 9 is provided at the front end of the sealing tube 8. A guide wire 12 is passed through the metal rod 3. The guide wire 12 is movably passed through and plays a certain shaping role during the process of puncturing the ventricle, which is convenient for operation.

[0040] The spiral 5 is fixedly connected to the injection tip 4, and the free end of the spiral 5 extends outward from the outer end surface of the injection barrel 1, and the extension distance is the same as the length of the injection needle 7. In this case, when not in use, the spiral 5 and the injection needle 7 are also in an exposed state and can be used for injection at any time without being unscrewed from the injection barrel 1. Therefore, the injection device of this structure can no longer be provided with structures such as the clamping tool 11 and the rotating column 10, and does not need to be clamped and rotated by the rotating column 10 to pierce the ventricle. However, in the process of delivering to the ventricular septum, the outer sheath 101 is also required to be sleeved on the outside of the injection barrel 1, and the guide wire 12 is added to shape it, and the outer sheath 10 plays a role in delivery; Figure 4 As shown, when anhydrous alcohol needs to be injected, after anhydrous alcohol is injected into the injection device through the syringe 701, it is only necessary to manually rotate the position of the injection tip 10, and also through the superior vena cava route, and with the support of the outer sheath 101, drive the entire injection device to rotate within the outer sheath 101, so that the spiral 5 connected to the injection needle 7 is inserted into the hypertrophic ventricular septum area (see Figure 5 The technical solution of the second embodiment reduces the step of unscrewing the spiral 5 by the clamping tool 11 by adjusting the position of the spiral 5 and the injection needle 7, which is another operation method and simplifies the operation steps.

[0041] The working principle and usage of this utility model:

[0042] When the injection device of the first embodiment is used, the spiral 5 follows the metal rod 3 to be retracted into the injection barrel 1 before injection. When injection is required, the guide wire 12 is inserted into the rotating column 10 and the metal rod 3 to be shaped, and the outer sheath 101 is put on the outer side of the injection barrel 1 for transmission. Then, the holding tool 10 is held to clamp the rotating column 10, and when the rotating column 10 is rotated, the rotating column 10 drives the metal rod 3 to rotate, and synchronously drives the injection needle 7 at the front end of the metal rod 3 to be inserted into the hypertrophic ventricular septum area. After determining the insertion position, The injection of anhydrous alcohol is completed by inserting a syringe into the rotating column 10. The utility model screws the spiral 5 vertically into the ventricular septum through the superior vena cava, and simultaneously drives the injection needle 7 to penetrate the hypertrophic ventricular septum area, and injects anhydrous alcohol into the area through this injection needle 7. The injection resistance of the injection needle 7 is very small, the damage range is controllable, and the hidden dangers such as large trauma and complications are effectively controlled, which is safer. The guide wire 12 is inserted into the rotating column 10 and the metal rod 3, which can play a shaping role for the entire injection device.

[0043] When the injection device of the second embodiment is used, when the spiral 5 is fixedly connected to the injection terminal 4, the spiral 5 extends outward from the injection barrel 1, and the extension distance is the same as the length of the injection needle 7, which is equivalent to the spiral 5 and the injection needle 7 being always exposed outside the injection barrel 1. When injection is required, the guide wire 12 is inserted into the rotating column 10 and the metal rod 3 for finalization, and the outer side of the injection barrel 1 is covered with the outer sheath 101 for transmission. When piercing, it is only necessary to manually rotate the position of the injection terminal 10 and rotate the entire injection device, so that the spiral 5 is connected to the injection needle 7 and inserted into the hypertrophic ventricular septum area to complete the positioning. After that, the syringe is inserted into the injection barrel 1 to complete the injection of anhydrous alcohol. The anhydrous alcohol is injected into the corresponding ventricular septum area through the injection needle 7, and the local injection of anhydrous alcohol can be completed. Similarly, the injection resistance of the injection needle 7 is very small, the damage range is controllable, and the hidden dangers such as large trauma and complications are effectively controlled, with higher safety.

[0044] The above description is only used to illustrate the technical solution of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An endocardial anhydrous alcohol injection device, characterized in that: The invention comprises an injection cylinder (1), wherein a limit baffle (2) is fixedly provided in the injection cylinder (1), a through hole is provided on the limit baffle (2), and a metal rod (3) is passed through the through hole, the interior of the metal rod (3) is arranged in a cavity, an injection needle (7) is installed at the end of the metal rod (3), the injection needle (7) and the metal rod (3) are connected to each other, a fixing plate (6) is provided at one end of the metal rod (3) close to the injection needle (7), a spiral (5) is fixedly provided on the side of the fixing plate (6) away from the limit baffle (2), the spiral (5) is sleeved on the outside of the injection needle (7), and its extended length is the same as the extended length of the free end of the injection needle (7).

2. The endocardial anhydrous alcohol injection device according to claim 1, characterized in that: An injection tip (4) is provided at one end of the injection barrel (1), and an opening is provided on the injection tip (4) for the spiral (5) and the injection needle (7) to pass through. A sealing tube (8) is fixedly provided at the other end of the injection barrel (1) away from the injection needle (7), and a sealing tube tip (9) is provided at the outer end of the sealing tube (8).

3. The endocardial anhydrous alcohol injection device according to claim 2, characterized in that: The spiral (5) is fixedly connected to one end of the metal rod (3); a rotating column (10) is inserted into the sealing tube end (9); the inner end of the rotating column (10) is fixedly connected to the other end of the metal rod (3); the interior of the rotating column (10) is a hollow space; the rotating column (10) rotates to drive the spiral (5) and the injection needle (7) to retract into the injection barrel (1), or to pass through.

4. The endocardial anhydrous alcohol injection device according to claim 2, characterized in that: The spiral (5) is fixedly connected to the injection tip (4), and the free end of the spiral (5) extends outward from the outer end surface of the injection barrel (1), and the extension distance is the same as the length of the injection needle (7).

5. The endocardial anhydrous alcohol injection device according to claim 1, characterized in that: The injection needle (7) is detachably fixedly arranged on the end of the metal rod (3).

6. The endocardial anhydrous alcohol injection device according to claim 3, characterized in that: The tube sealing end (9) is spiral-shaped, and the rotating column (10) is made of stainless steel.

7. The endocardial anhydrous alcohol injection device according to claim 3, characterized in that: A guide wire (12) for shaping is detachably inserted into the rotating column (10) and the metal rod (3), and a handle (13) is fixedly provided at the outer end of the guide wire (12).

8. The endocardial anhydrous alcohol injection device according to claim 3, characterized in that: It also includes a clamping tool (11) matched with the rotating column (10), and a clamping portion for the clamping tool (11) to clamp is formed on the rotating column (10).

9. The endocardial anhydrous alcohol injection device according to claim 8, characterized in that: The clamping tool (11) comprises a clamping plate (112), two clamping plates (112) are provided, the two clamping plates (112) are symmetrically arranged, an elastic block (111) is fixedly arranged between the two clamping plates (112), the elastic block (111) is located at the upper end of the clamping plate (112), and a hand handle (113) is fixedly arranged at the bottom of the clamping plate (112).

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