Pericardium thoracocentesis and effusion drainage device

Abstract

The invention relates to the technical field of medical instruments, in particular to a pericardium thoracocentesis and effusion drainage device which comprises a needle tube, a plurality of elastic strips, a cone and a deformation assembly, one end of the needle tube extends into the body of a patient, the elastic strips are distributed around the axis of the needle tube at intervals, and the cone is arranged in the needle tube. One end of each elastic strip is fixedly connected with the end, located in the body of a patient, of the needle tube, each elastic strip extends in the axial direction of the needle tube, the large end of the cone is fixedly connected with the end, away from the needle tube, of each elastic strip, and the middle of each elastic strip can be bent in the radial direction of the needle tube in the direction away from the axis of the needle tube; the deformation assembly is used for controlling the cone to get close to or away from the needle tube in the axial direction of the needle tube. Through the matching arrangement of the deformation assembly and the cone and the matching arrangement of the cone and the multiple elastic strips, when the cone gets close to the needle tube, the middles of the multiple elastic strips are bent in the radial direction of the needle tube in the direction away from the axis of the needle tube, when hydrops are extracted, the needle tube is not prone to being blocked, and the hydrops extraction process is smoother.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a pericardial thoracocentesis and effusion drainage device. Background Art

[0002] In clinical medical practice, pericardiothoracentesis and effusion drainage are key treatments for patients with pericardial effusion and pleural effusion. Timely and effective drainage of these effusions can significantly relieve the patient's symptoms of dyspnea and palpitations caused by the effusion compressing the heart and lungs, providing strong support for the diagnosis and subsequent treatment of the disease.

[0003] In the drainage process, the control of suction speed is extremely critical. When medical staff increase the suction force in pursuit of rapid relief of patient symptoms, excessive negative pressure will cause the tissue near the effusion to be quickly washed out. Taking pericardial effusion drainage as an example, once the pericardial surrounding tissue is sucked out, the drainage port of the drainage tube is easily blocked, resulting in poor drainage, which not only fails to achieve the expected treatment effect, but may also delay the disease and lead to more serious consequences. Summary of the invention

[0004] Based on this, it is necessary to provide a pericardiopleural puncture and effusion drainage device to address the problem that the current pericardiopleural puncture and effusion drainage device has poor safety during use.

[0005] The above purpose is achieved through the following technical solutions: A pericardial thoracotomy and effusion drainage device comprises a piercing mechanism and an extraction mechanism, wherein the piercing mechanism comprises an external tube, a needle tube, an elastic strip, a cone and a deformation component, wherein the external tube is arranged outside the patient's body, one end of the needle tube is fixedly connected and communicated with the external tube, and the other end of the needle tube extends into the patient's body, a plurality of elastic strips are provided, one end of each elastic strip is respectively fixedly connected to an end of the needle tube away from the external tube, and each elastic strip extends along the axial direction of the needle tube when not subjected to external force, and a plurality of elastic strips are distributed at intervals around the axis of the needle tube; the cone is coaxial with the needle tube, and the large end of the cone is fixedly connected to an end of each elastic strip away from the needle tube, and when the cone approaches the needle tube along the axial direction of the needle tube, the middle part of each elastic strip can bend along the radial direction of the needle tube in a direction away from the axis of the needle tube; the deformation component is used to control the cone to approach or move away from the needle tube along the axial direction of the needle tube; the extraction mechanism is used to extract the effusion in the patient's body through the needle tube.

[0006] Preferably, the large end of the cone is fixed to the inner side of a circle surrounded by a plurality of elastic strips.

[0007] Preferably, each elastic strip has a thick end and a thin end in the axial direction of the needle tube, the thick end of the elastic strip is fixedly mounted on the end of the needle tube, and the thin end of the elastic strip is fixedly mounted on the cone.

[0008] Preferably, the thin end of each elastic strip is provided with an inclined surface, which gradually moves away from the axis of the needle tube from the connection position between the elastic strip and the cone to the side close to the needle tube, and is parallel to the cone surface at the corresponding position of the cone.

[0009] Preferably, the deformation component includes a mounting shell, a rotating shaft, a wire, a gear and a paddle. The mounting shell is fixedly mounted on the external tube, and the mounting shell is connected to the external tube; the rotating shaft is rotatably arranged in the mounting shell, and one end of the rotating shaft passes through the mounting shell and is located outside the mounting shell, one end of the wire is fixedly mounted on the circumferential surface of the rotating shaft, and the other end of the wire is fixedly mounted on the middle part of the large end of the cone, and the wire is located inside the mounting shell and the external tube; the gear is arranged in the mounting shell, and the gear is sleeved on the rotating shaft, one side of the paddle is fixedly mounted on the mounting shell, and the paddle is elastic, and can contact the paddle when the gear rotates.

[0010] Preferably, an angle is provided between the paddle and the mounting shell and the same plane where the axis of the rotating shaft is located.

[0011] Preferably, the external force applied to the elastic strip when it is deformed is greater than the resistance of the cone when it contacts the patient's tissue.

[0012] Preferably, the extraction mechanism includes a hose and a syringe, and the syringe is connected to the external tube through the hose.

[0013] Preferably, the syringe and the hose are threadedly connected.

[0014] Preferably, the extraction mechanism comprises a collecting bag, and the collecting bag is connected to the external tube.

[0015] The beneficial effects of the present invention are as follows: 1. The cone is provided, which makes it more convenient to insert the needle into the patient's body; the multiple elastic strips are arranged at intervals, so that the accumulated fluid in the patient's body can enter the inside of the needle tube from the gaps between the multiple elastic strips in multiple directions, thereby improving the efficiency of extracting the accumulated fluid; through the coordinated arrangement of the deformation component and the cone, and the cone and the multiple elastic strips, when the cone approaches the needle tube, the middle parts of the multiple elastic strips are bent along the radial direction of the needle tube in a direction away from the axis of the needle tube, and the local distance between two adjacent elastic strips is increased. The end of the needle tube entering the patient's body is set as a drainage port, and the tissues around the drainage port are held open by the multiple elastic strips. When extracting the accumulated fluid, the drainage port is not easily blocked, and the extraction process is smoother.

[0016] 2. After the middle parts of the multiple elastic strips move away from each other under the action of the cone, the movement of the needle tube in the axial direction of the patient's body will encounter a certain resistance, the drainage port is not easy to leave the drainage area, and repeated puncture is unnecessary, which reduces the patient's physical burden and psychological pressure.

[0017] 3. When the cone approaches the needle tube and multiple elastic strips are bent, as the bending degree of the elastic strips increases, the small end of the cone gradually shrinks between the multiple elastic strips. After the needle tube shakes, the cone will not cause damage to the tissues in the patient's body, reducing the patient's pain and treatment risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a pericardiothoracic puncture and effusion drainage device provided in an embodiment of the present invention; Figure 2 for Figure 1 The enlarged view of point A in the middle; Figure 3 for Figure 1 The enlarged view of point B in the middle; Figure 4 A schematic diagram of the structure of a puncture mechanism of a pericardiothoracic puncture and effusion drainage device provided in an embodiment of the present invention; Figure 5 for Figure 4 Sectional view along CC direction; Figure 6 for Figure 5 Enlarged view of point E in the middle; Figure 7 A schematic diagram of the structure of an elastic strip of a pericardiothoracic puncture and effusion drainage device after deformation provided by an embodiment of the present invention.

[0019] in: 100. External tube; 101. Needle tube; 102. Elastic strip; 103. Cone; 110. Mounting shell; 111. Rotating shaft; 112. Handle; 113. Silk thread; 114. Gear; 115. Pick; 116. Hose; 117. Syringe. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] like Figures 1 to 7 As shown, a pericardial thoracocentesis and effusion drainage device provided by an embodiment of the present invention includes a piercing mechanism and an extraction mechanism, wherein the piercing mechanism includes an external tube 100, a needle tube 101, an elastic strip 102, a cone 103 and a deformation component, wherein the external tube 100 is arranged outside the patient's body, one end of the needle tube 101 is fixedly connected and communicated with the external tube 100, and the other end of the needle tube 101 extends into the patient's body, and a plurality of elastic strips 102 are provided, one end of each elastic strip 102 is respectively fixedly connected to one end of the needle tube 101 away from the external tube 100, and each elastic strip 102 is moved along the needle tube 101 when not subjected to external force. The cone 103 is coaxial with the needle tube 101, and the large end of the cone 103 is fixedly connected to the end of each elastic strip 102 away from the needle tube 101. When the cone 103 approaches the needle tube 101 along the axial direction of the needle tube 101, the middle part of each elastic strip 102 can bend along the radial direction of the needle tube 101 away from the axis of the needle tube 101; the deformation component is used to control the cone 103 to approach or move away from the needle tube 101 along the axial direction of the needle tube 101; the extraction mechanism is used to extract the accumulated fluid in the patient's body through the needle tube 101.

[0024] The cone 103 is provided, and the needle tube 101 is more convenient to insert into the patient's body; the multiple elastic strips 102 are arranged at intervals, and the accumulated fluid in the patient's body can enter the inside of the needle tube 101 from the gaps between the multiple elastic strips 102 in multiple directions, thereby improving the efficiency of extracting the accumulated fluid; through the coordinated arrangement of the deformation component and the cone 103, and the cone 103 and the multiple elastic strips 102, when the cone 103 approaches the needle tube 101, the middle parts of the multiple elastic strips 102 are bent along the radial direction of the needle tube 101 in the direction away from the axis of the needle tube 101, and the distance between two adjacent elastic strips 102 is increased, and the end of the needle tube 101 entering the patient's body is set as the drainage port, and the tissues around the drainage port are held open by the multiple elastic strips 102. When the accumulated fluid is extracted, the drainage port is not easily blocked, and the extraction process is smoother.

[0025] After the middle parts of the multiple elastic strips 102 move away from each other under the action of the cone 103, the movement of the needle tube 101 in the axial direction of the patient's body will encounter a certain resistance, and the drainage port is not easy to leave the drainage area, and repeated puncture is not required, which reduces the patient's physical burden and psychological pressure. When the cone 103 approaches the needle tube 101 and the multiple elastic strips 102 are bent, as the bending degree of the elastic strips 102 increases, the small end of the cone 103 gradually shrinks between the multiple elastic strips 102. After the needle tube 101 shakes, the cone 103 will not cause damage to the tissue in the patient's body, reducing the patient's pain and treatment risks.

[0026] In this embodiment, the large end of the cone 103 is fixed to the inner side of the circle surrounded by the multiple elastic strips 102 to reduce the volume of the cone 103 and reduce the resistance of the cone 103 during the process of inserting the cone 103 into the patient's body.

[0027] In this embodiment, each elastic strip 102 has a thick end and a thin end in the axial direction of the needle tube 101, the thick end of the elastic strip 102 is fixedly mounted on the end of the needle tube 101, and the thin end of the elastic strip 102 is fixedly mounted on the cone 103. When two adjacent elastic strips 102 are not deformed, the distance between their thick ends is smaller than the distance between their thin ends; when the liquid extraction is completed, after the cone 103 is controlled to move away from the needle tube 101 by the deformation component, the multiple elastic strips 102 approach each other, and when the needle tube 101 is pulled out, the distance between the middle parts of the two adjacent elastic strips 102 will be reduced, and at the same time, the tissue between the two adjacent elastic strips 102 will move from the thick end of the elastic strip 102 to the thin end of the elastic strip 102, and the tissue between the two adjacent elastic strips 102 can be more easily detached from between the two adjacent elastic strips 102, thereby reducing the damage of the elastic strip 102 to the surrounding tissue.

[0028] In this embodiment, a bevel is provided at the thin end of each elastic strip 102. The bevel gradually moves away from the axis of the needle tube 101 from the connection position between the elastic strip 102 and the cone 103 to the side close to the needle tube 101, and the bevel is parallel to the conical surface at the corresponding position of the cone 103. When the elastic strip 102 contacts the patient's body tissue, the bevel on the elastic strip 102 will guide the elastic strip 102 to move smoothly between the patient's tissue.

[0029] In this embodiment, the deformation component includes a mounting shell 110, a rotating shaft 111, a handle 112, a wire 113, a gear 114 and a paddle 115. The mounting shell 110 is fixedly mounted on the external tube 100, and the mounting shell 110 is connected to the external tube 100; the rotating shaft 111 is rotatably arranged in the mounting shell 110, and one end of the rotating shaft 111 passes through the mounting shell 110 and is located outside the mounting shell 110. The handle 112 is fixedly mounted on one end of the rotating shaft 111 located outside the mounting shell 110 to facilitate the rotation of the rotating shaft 111; one end of the wire 113 is fixedly mounted on the circumferential surface of the rotating shaft 111, and the other end of the wire 113 is fixedly mounted on the middle part of the large end of the cone 103. The wire 113 is located inside the mounting shell 110 and the external tube 100. The gear 114 is arranged in the mounting shell 110, and the gear 114 is sleeved on the rotating shaft 111. One side of the paddle 115 is fixedly mounted on the mounting shell 110, and the paddle 115 is elastic. When the gear 114 rotates, it can contact with the paddle 115. The rotation of the gear 114 is blocked by the paddle 115. When the rotating shaft 111 rotates, it can wrap around the silk thread 113. The winding of the silk thread 113 will pull the cone 103 closer to the needle tube 101, and the multiple elastic strips 102 will be deformed at this time; when the rotating shaft 111 is rotated by the handle 112, the gear 114 will contact with the paddle 115 to make the paddle 115 bend. After the paddle 115 is deformed into a certain shape, the gear 114 will pass over the paddle 115. When the handle 112 is no longer rotated, the multiple elastic strips 102 will apply a force to the shaft 111 to rotate in the opposite direction through the wire 113. The shaft 111 has a tendency to rotate in the opposite direction. At this time, the paddle 115 is in contact with the gear 114. The thrust applied by the gear 114 to the paddle 115 is not enough to cause the paddle 115 to produce a deformation amount that the gear 114 can pass over. The paddle 115 hinders the reverse rotation of the gear 114, and the multiple elastic strips 102 maintain the deformed state.

[0030] In this embodiment, an angle is set between the connecting position of the paddle 115 and the mounting shell 110 and the same plane where the axis of the rotating shaft 111 is located and the paddle 115; the rotation direction of the rotating shaft 111 is divided into forward and reverse directions. When the rotating shaft 111 is driven to rotate forward by the handle 112, the gear 114 moves from the position where the paddle 115 is connected to the mounting shell 110 to the position where the paddle 115 contacts the gear 114. At this time, the paddle 115 will be deformed after contacting the gear 114, and the silk thread 113 will be continuously wound around the rotating shaft 111; when the rotating shaft 111 is driven to rotate reversely by the handle 112, the gear 114 will be deformed after contacting the gear 114, and the silk thread 113 will be continuously wound around the rotating shaft 111. 14 moves from the position where the paddle 115 contacts the gear 114 to the position where the paddle 115 is connected to the mounting shell 110. During the process, the paddle 115 is subjected to a large thrust by the gear 114, and the paddle 115 will be deformed beyond its maximum amount, thereby breaking. The silk thread 113 wound on the rotating shaft 111 will be continuously released, and the multiple deformed elastic strips 102 will recover. The recovered elastic strips 102 will not maintain the deformed state under the action of the broken paddle 115, so that the pericardium and thoracocentesis and effusion drainage device cannot be reused to prevent cross infection caused by repeated use.

[0031] In this embodiment, the external force applied to the elastic strip 102 when it is deformed is greater than the resistance of the cone 103 when it contacts the patient's tissue. When the cone 103 is inserted into the patient's body, multiple elastic strips 102 can be inserted into the patient's body without being deformed, and the elastic strips 102 enter the patient's body relatively smoothly.

[0032] In this embodiment, the extraction mechanism includes a hose 116 and a syringe 117. The syringe 117 is connected to the external tube 100 through the hose 116. After the needle tube 101 is inserted into the patient's body, the drainage port reaches the drainage area and the multiple elastic strips 102 are stretched, the accumulated fluid in the patient's body can be extracted through the syringe 117. The accumulated fluid passes through the needle tube 101, the external tube 100 and the hose 116 in turn and then enters the syringe 117; in the process of extracting the accumulated fluid, the vibration caused by the shaking of the syringe 117 will not directly act on the external tube 100, and the needle tube 101 is relatively stable.

[0033] In this embodiment, the syringe 117 is threadedly connected to the hose 116. After the syringe 117 is fully drained of fluid, it can be replaced by relative rotation with the hose 116. Compared with the existing plug-in type setting, the shaking of the hose 116 when replacing the syringe 117 can be effectively reduced.

[0034] In some other embodiments, the extraction mechanism includes a collecting bag, which is connected to the external tube 100. There is a certain degree of negative pressure in the collecting bag. After the collecting bag is connected to the external tube 100, the accumulated fluid in the patient's body can enter the collecting bag under the action of negative pressure, thereby reducing the difficulty of operation.

[0035] The working principle of the pericardiothoracic puncture and effusion drainage device provided in the above embodiment is: First, the syringe 117 and the external tube 100 are connected through the hose 116, and then the needle tube 101 is inserted into the patient's fluid accumulation position. When the cone 103 contacts the patient's skin, the cone 103 will pierce the patient's skin and enter the patient's body, and then the elastic strip 102 and the needle tube 101 will also enter the patient's body.

[0036] After the needle tube 101 moves to the drainage area, the handle 112 is turned, and the handle 112 drives the shaft 111 to rotate forward. The shaft 111 rotates so that the thread 113 is wound around the circumference of the shaft 111. The thread 113 is continuously wound around the shaft 111, and the thread 113 between the shaft 111 and the cone 103 becomes shorter and shorter. The thread 113 pulls the cone 103 closer to the needle tube 101, and the middle part of the plurality of elastic strips 102 is affected by the cone 103 and the needle tube 101. 1 is squeezed by the needle tube 101, and the deformed elastic strip 102 props up the tissue near the drainage port, while the cone 103 shrinks between the multiple deformed elastic strips 102; when the shaft 111 rotates, the shaft 111 drives the gear 114 to rotate, and the gear 114 contacts the paddle 115 when rotating. The rotating gear 114 pushes the paddle 115 to make it deform to a certain extent and then pass over the paddle 115.

[0037] After the elastic strip 102 forms a predetermined shape, the handle 112 is no longer rotated. At this time, the elastic strip 102 is in an energy storage state. Under the action of the cone 103 and the wire 113, the shaft 111 has a tendency to rotate in the opposite direction. At the same time, with the cooperation of the paddle 115 and the gear 114, the shaft 111 is in a stationary state relative to the mounting shell 110. At this time, the accumulated fluid in the patient's body can be extracted through the syringe 117.

[0038] After the effusion is extracted, the handle 112 is rotated in the opposite direction. At this time, the paddle 115 is greatly deformed and broken under the action of the gear 114. The paddle 115 no longer hinders the rotation of the gear 114, the elastic strip 102 recovers, and finally the needle tube 101 is pulled out.

[0039] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A pericardiothoracic puncture and effusion drainage device, characterized in that: The invention comprises a threading mechanism and an extraction mechanism. The threading mechanism comprises an external tube, a needle tube, an elastic strip, a cone and a deformation component. The external tube is arranged outside the patient's body, one end of the needle tube is fixedly connected and communicated with the external tube, and the other end of the needle tube extends into the patient's body. A plurality of elastic strips are provided, one end of each elastic strip is respectively fixedly connected to an end of the needle tube away from the external tube, and each elastic strip extends along the axial direction of the needle tube when not subjected to external force, and a plurality of elastic strips are distributed at intervals around the axis of the needle tube; the cone is coaxial with the needle tube, and the large end of the cone is fixedly connected to an end of each elastic strip away from the needle tube, and when the cone approaches the needle tube along the axial direction of the needle tube, the middle part of each elastic strip can bend along the radial direction of the needle tube in a direction away from the axis of the needle tube; the deformation component is used to control the cone to approach or move away from the needle tube along the axial direction of the needle tube; the extraction mechanism is used to extract the accumulated fluid in the patient's body through the needle tube.

2. A pericardiothoracic puncture and effusion drainage device according to claim 1, characterized in that: The large end of the cone is fixed to the inner side of a circle surrounded by a plurality of elastic strips.

3. A pericardiothoracic puncture and effusion drainage device according to claim 2, characterized in that: Each elastic strip has a thick end and a thin end in the axial direction of the needle tube. The thick end of the elastic strip is fixedly mounted on the end of the needle tube, and the thin end of the elastic strip is fixedly mounted on the cone.

4. A pericardiothoracic puncture and effusion drainage device according to claim 3, characterized in that: The thin end of each elastic strip is provided with an inclined surface, which gradually moves away from the axis of the needle tube from the connection position of the elastic strip and the cone to the side close to the needle tube, and is parallel to the cone surface at the corresponding position of the cone.

5. A pericardiothoracic puncture and effusion drainage device according to claim 1, characterized in that: The deformation component includes a mounting shell, a rotating shaft, a wire, a gear and a paddle. The mounting shell is fixedly mounted on an external tube, and the mounting shell is connected to the external tube. The rotating shaft is rotatably arranged in the mounting shell, and one end of the rotating shaft passes through the mounting shell and is located outside the mounting shell. One end of the wire is fixedly mounted on the circumferential surface of the rotating shaft, and the other end of the wire is fixedly mounted on the middle part of the large end of the cone. The wire is located inside the mounting shell and the external tube. The gear is arranged in the mounting shell, and the gear is sleeved on the rotating shaft. One side of the paddle is fixedly mounted on the mounting shell, and the paddle is elastic, so that the gear can contact the paddle when rotating.

6. A pericardiothoracic puncture and effusion drainage device according to claim 5, characterized in that: An angle is arranged between the connecting position of the paddle and the mounting shell and the same plane where the axis of the rotating shaft is located and the paddle.

7. A pericardiothoracic puncture and effusion drainage device according to claim 1, characterized in that: When the elastic strip is deformed, the external force it receives is greater than the resistance when the cone contacts the patient's tissue.

8. A pericardiothoracic puncture and effusion drainage device according to claim 1, characterized in that: The extraction mechanism comprises a hose and a syringe, and the syringe is connected with an external tube through the hose.

9. A pericardiothoracic puncture and effusion drainage device according to claim 8, characterized in that: The syringe and the hose are threadedly connected.

10. A pericardiothoracic puncture and effusion drainage device according to claim 1, characterized in that: The extraction mechanism comprises a collecting bag which is connected to an external tube.

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