Atrial septal puncture system

Abstract

The present invention discloses an atrial septal puncture system, comprising: a control handle, an expansion tube, a puncture tube and a guide wire; the control handle is provided with a male shell, a female shell and a push button on the outside, and a stress tube, a positioning tube, a sliding block and a Luer seat are provided inside in sequence from far to near; elastic mechanisms containing springs are provided radially and axially between the push button and the sliding block; the radial elastic mechanism realizes the achievement and release of the puncture needle locking function, and the axial elastic mechanism realizes the puncture needle insertion and retraction action; the various pipe fittings and components in the control handle are cleverly designed, with perfect details, stable limit, smooth transmission, simple and quick puncture operation, and are very convenient to use; the puncture needle insertion length can be precisely controlled; in addition, the system has a locking function and is highly safe.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an atrial septal puncture system. Background Art

[0002] In recent years, technological advancements in the field of cardiac intervention have been rapidly advancing, particularly for complex structural heart disease, including congenital heart disease, valvular disease, and ventricular assist devices. These technologies have provided a variety of new approaches for minimally invasive treatment of complex heart diseases. Transseptal puncture is a commonly used approach for treating these conditions. Through the femoral or jugular vein, and after crossing the atrial septum, structural diseases of the left heart system can be treated, including left atrial appendage closure, mitral valve intervention, aortic valve intervention, and paravalvular leak closure.

[0003] The general method of atrial septal puncture is to insert a puncture kit, including a delivery sheath and a puncture needle inside it, into the patient's body through the femoral vein. After the puncture kit reaches the predetermined position, namely the atrial septum, the puncture needle in the puncture kit is pushed forward, and the atrial septum is punctured with the puncture needle. Usually, the front end of the atrial septal puncture needle is generally knife-shaped or blunt-shaped. During the puncture process, the atrial septum is penetrated by the mechanical impact force generated by the puncture needle on the atrial septum. During the operation, it is easy to cause damage to the internal structure of the heart and cardiac perforation bleeding. Therefore, the puncture operation should be simple and fast, and the puncture length should be precisely controlled. In addition, during the delivery of the puncture kit and the process of waiting for puncture after delivery, it is necessary to ensure that the puncture needle needle is always locked in the delivery sheath to prevent accidental touch from causing the needle to extend out of the delivery sheath and cause damage to the passing blood vessels and ventricles. Summary of the Invention

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides an atrial septal puncture system, which has a simple and quick puncture operation, is very convenient to use, can achieve precise control of the puncture needle length, and also has a locking function, which is highly safe.

[0005] To achieve the above-mentioned purpose, the present invention solves the technical problem by adopting a technical solution that is, an atrial septal puncture system comprising:

[0006] The control handle is provided with a male shell, a female shell and a push button on the outside of the control handle, and a stress tube, a positioning tube, a sliding block and a Luer seat are provided in sequence from far to near inside. The male shell and the female shell are fixed by plugging in the upper and lower covers and merged into the far and near ends and one side of the outer wall to form an opening. The middle part of the stress tube is plugged in and fixed to the distal opening between the male shell and the female shell, the middle part of the Luer seat is plugged in and fixed to the proximal opening between the male shell and the female shell, the middle part of the push button is plugged in and fixed to the outer wall opening on one side of the male shell and the female shell, and a hand touch part and a transmission part are provided on both sides. The distal end of the movable part is provided with a first distal plug-in portion, the proximal end is provided with a plurality of first proximal plug-in portions, the upper end is provided with a push piece, the lower wall is provided with a first pipe groove and a plurality of plug holes, both sides are provided with a first locking block, the distal end of the sliding block is provided with a second distal plug-in portion, the proximal end is provided with a plurality of second proximal plug-in portions, both sides are provided with a limit slider, the upper wall is provided with a second pipe groove and a plurality of column holes, the column holes are provided with a plug post and a first spring, the first spring is sleeved with the plug post, the second distal plug-in portion, the second proximal plug-in portion, the plug post and the first spring all protrude and slide The upper wall of the movable block, the inner walls of the male shell and the female shell are provided with a limit collar, a pair of second locking blocks and a pair of limit sliding grooves, the proximal end of the positioning tube is fixed in the Luer seat, the middle plug-in is fixed in the sliding block and adheres to the second tube groove for bonding and reinforcement, the distal end of the sliding block is inserted and fixed in the limit collar and the outer sleeve is provided with a second spring, the second spring is clamped and fixed between the sliding block and the limit collar, the first locking block and the second locking block correspond to each other, match each other, and are fixed by plugging, the first distal plug-in portion and the second distal plug-in portion Match each other, slide and fix after card insertion, the first proximal card insertion part and the second proximal card insertion part correspond one-to-one, match each other, slide and fix after card insertion, the socket and the first spring correspond one-to-one with the plug post, match each other, slide and fix after card insertion, the limiting slide groove and the limiting slider correspond one-to-one, match each other, slide and fix after card insertion, the push piece is located above the second distal card insertion part and the second proximal card insertion part, a gap is left between the end face of the plug post and the bottom surface of the socket, and the two ends of the first spring respectively abut the bottom surface of the socket and the bottom surface of the column hole;

[0007] An expansion tube, wherein the proximal end of the expansion tube is inserted and fixed in the stress tube for bonding and reinforcement;

[0008] The puncture tube has a proximal end that is inserted into the Luer seat and fixed thereto by bonding, a middle portion that is sleeved into the positioning tube and fixed thereto by bonding, and a distal end that is provided with a hollow needle that is inserted into the expansion tube, with the hollow needle being hidden in the distal end of the expansion tube;

[0009] A guide wire, the guide wire is sleeved in the puncture tube, and the proximal end of the guide wire extends out of the proximal end of the Luer seat;

[0010] The hand-touch portion is pressed until the end surface of the plug column and the bottom surface of the socket are in contact, the first locking block and the second locking block are disengaged, the push piece is engaged and fixed between the second distal plug-in portion and the second proximal plug-in portion, the first tube placement groove fits the positioning tube, and the hand-touch portion is continued to be pushed toward the distal end of the expansion tube. The limit slider slides in the limit slide groove in the same direction as the push button, and the hollow needle extends out of the distal end of the expansion tube.

[0011] Preferably, the push button and the limit slider have the same displacement stroke length.

[0012] Preferably, when the push button and the limit slider are displaced to the maximum length, the hollow needle is completely extended out of the distal end of the expansion tube.

[0013] Preferably, the middle portion of the hand-touch portion bulges outward and a friction texture is provided on the outer wall, and the friction texture appears as a strip-shaped protrusion.

[0014] Preferably, the first locking block and the second locking block are both composed of a plurality of wedge-shaped blocks arranged in an arrangement, and the wedge-shaped blocks in the first locking block and the wedge-shaped blocks in the second locking block are arranged in parallel, facing each other, and in opposite directions.

[0015] Preferably, the number of the column holes is 4, and the 4 column holes are distributed at the four end corners of the upper wall of the sliding block.

[0016] Preferably, the male shell and the female shell are bonded and reinforced when the card is inserted and covered.

[0017] Due to the application of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0018] In the present invention, elastic mechanisms including springs are provided radially and axially between the push button and the sliding block. The radial elastic mechanism realizes the achievement and release of the puncture needle locking function, and the axial elastic mechanism realizes the insertion and retraction of the puncture needle. The various components in the various pipes and control handles are cleverly designed, with perfect details, stable limit, smooth transmission, simple and quick puncture operation, and very convenient use. It can realize precise control of the puncture needle insertion length and has a locking function, which is highly safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereoscopic diagram of an embodiment of the atrial septal puncture system proposed by the present invention.

[0020] Figure 2 This is a stereoscopic diagram of an embodiment of the atrial septal puncture system proposed by the present invention with the male shell removed.

[0021] Figure 3 The invention proposes an embodiment of the atrial septal puncture system. Figure 1 .

[0022] Figure 4 The invention proposes an embodiment of the atrial septal puncture system. Figure 2 .

[0023] In the figure: 1. control handle; 2. male shell; 3. female shell; 4. push button; 5. stress tube; 6. positioning tube; 7. sliding block; 8. Luer seat; 9. hand touch part; 10. transmission part; 11. first distal plug-in part; 12. first proximal plug-in part; 13. push piece; 14. first tube placement groove; 15. insertion hole; 16. first locking block; 17. second distal plug-in part; 18. second proximal plug-in part; 19. limiting slider; 20. second tube placement groove; 21. column hole; 22. insertion column; 23. first spring; 24. limiting collar; 25. second locking block; 26. limiting slide groove; 27. expansion tube; 28. puncture tube; 29. ​​hollow needle; 30. guide wire; 31. friction texture; 32. wedge block; 33. second spring. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to specific embodiments. (In the field of medical device technology, the distal end refers to the end of a medical device that is controlled by an operator or is outside the human body, and the proximal end refers to the other end of a medical device that performs a diagnostic / therapeutic function or is inside the human body. The definitions of the far and near directions are extended hereby, and the corresponding up, down, left, and right directions are supplemented to facilitate a detailed and clear description of individual components and parts of components in the overall structure.)

[0025] Combine Figures 1 to 4 , this embodiment is an atrial septal puncture system, comprising:

[0026] The control handle 1 is provided with a male shell 2, a female shell 3 and a push button 4 on the outside of the control handle 1, and a stress tube 5, a positioning tube 6, a sliding block 7 and a Luer seat 8 are provided inside in sequence from far to near. The male shell 2 and the female shell 3 are fixed by plugging the upper and lower covers together at the far and near ends and the outer wall of one side to form an opening. The middle part of the stress tube 5 is plugged in and fixed to the distal opening between the male shell 2 and the female shell 3. The middle part of the Luer seat 8 is plugged in and fixed to the proximal opening between the male shell 2 and the female shell 3. The middle part of the push button 4 is plugged in and fixed to the outer wall opening on one side between the male shell 2 and the female shell 3 and is slidably fixed. A hand touch part 9 and a transmission part 10 are provided on both sides respectively. The transmission part 10 is provided with a first The distal plug-in portion 11 is provided with a plurality of first proximal plug-in portions 12 at the proximal end, a push piece 13 is provided at the upper part, a first tube groove 14 and a plurality of plug holes 15 are provided on the lower wall, and a first locking block 16 is provided on both sides. The distal end of the sliding block 7 is provided with a second distal plug-in portion 17, and the proximal end is provided with a plurality of second proximal plug-in portions 18. A limiting slider 19 is provided on both sides, a second tube groove 20 and a plurality of column holes 21 are provided on the upper wall, and a column 22 and a first spring 23 are provided in the column hole 21. The first spring 23 is fitted with the column 22, the second distal plug-in portion 17, the second proximal plug-in portion 18, the column 22 and the first spring 2 3 are protruding from the upper wall of the sliding block 7, and the inner walls of the male shell 2 and the female shell 3 are provided with a limit collar 24, a second locking block 25 and a limit slide 26. The proximal end of the positioning tube 6 is fixed in the Luer seat 8, the middle part is fixed in the sliding block 7 and adhered to the second tube groove 20 for bonding and reinforcement, the distal end extends out of the sliding block 7 and is fixed in the limit collar 24 and the outer sleeve is provided with a second spring 33. The second spring 33 is fixed between the sliding block 7 and the limit collar 24. The first locking block 16 and the second locking block 25 correspond to each other, match each other, and are fixed by plugging. The first distal plug-in portion 11 and the second distal plug-in portion 17 match each other, slide and fix after card insertion, the first proximal card insertion part 12 and the second proximal card insertion part 18 correspond one-to-one, match each other, slide and fix after card insertion, the socket 15 and the first spring 23 correspond one-to-one with the plug post 22, match each other, slide and fix after card insertion, the limiting slide groove 26 and the limiting slider 19 correspond one-to-one, match each other, slide and fix after card insertion, the push piece 13 is located above the second distal card insertion part 17 and the second proximal card insertion part 18, a gap is left between the end face of the plug post 22 and the bottom surface of the socket 15, and the two ends of the first spring 23 respectively abut the bottom surface of the socket 15 and the bottom surface of the column hole 21;

[0027] The expansion tube 27, the proximal end of the expansion tube 27 is inserted and fixed in the stress tube 5 for bonding and reinforcement;

[0028] The proximal end of the puncture tube 28 is inserted into the Luer seat 8 and fixed by bonding, the middle part is fitted into the positioning tube 6 and fixed by bonding, and the distal end is provided with a hollow needle 29 and extends into the expansion tube 27, and the hollow needle 29 is hidden in the distal end of the expansion tube 27;

[0029] The guide wire 30 is sleeved in the puncture tube 28 , and its proximal end extends out of the proximal end of the Luer seat 8 .

[0030] In this embodiment and other embodiments of the present invention:

[0031] The guide wire 30 is an alloy wire with excellent strength and toughness. It is also a curved guide wire whose distal end has a curved shape that conforms to the heart chamber after being released.

[0032] The middle part of the hand-touch portion 9 is raised outwards and a friction texture 31 is provided on the outer wall. The friction texture 31 is a strip-shaped protrusion, which facilitates the application of force to achieve the pressing and pushing of the push button 4.

[0033] The first locking block 16 and the second locking block 25 are both composed of a plurality of wedge-shaped blocks 32 arranged in an array. The wedge-shaped blocks 32 in the first locking block 16 and the wedge-shaped blocks 32 in the second locking block 25 are arranged in parallel and opposite to each other. The first locking block 16 and the second locking block 25 are engaged with each other in a toothed manner to achieve card insertion and fixation.

[0034] There are four post holes 21, which are distributed at the four corners of the upper wall of the sliding block 7. The plug posts 22, the first springs 23, and the plug holes 15 all have the same number and distribution as the post holes 21. The synchronous insertion at the four corners ensures smooth transmission between the push button 4 and the sliding block 7.

[0035] The male shell 2 and the female shell 3 are bonded and reinforced when the card cover is inserted and closed, so that the outer shell structure of the control handle 1 is more reliable.

[0036] The working principle of this embodiment is: press the hand touch part 9 until the end face of the plug column 22 abuts against the bottom surface of the socket 15, the first locking block 16 and the second locking block 25 disengage, and the push piece 13 is fixed between the second distal plug-in part 17 and the second proximal plug-in part 18 to form a transmission connection, the first tube placement groove 14 fits the positioning tube 6, and the first tube placement groove 14 and the second tube placement groove 20 are both semi-cylindrical, and the two just wrap the positioning tube 6, and continue to push the hand touch part 9 toward the distal end of the expansion tube 27, the limit slider 19 slides in the same direction as the push button 4 in the limit slide groove 26, and the hollow needle 29 extends out of the distal end of the expansion tube 27. The displacement stroke length of the push button 4 and the limit slider 19 is the same, that is, the maximum displacement length of the push button 4 in the outer wall opening on one side between the male shell 2 and the female shell 3 is equal to the limit slider 19 in the limit slide groove 26 The maximum displaceable length is as follows: when the push button 4 and the limit slider 19 are displaced to the maximum length, that is, the distal end of the push button 4 abuts the distal end of the opening of the outer wall on one side between the male shell 2 and the female shell 3 and the distal end of the limit slider 19 abuts the distal end of the limit slide groove 26, the hollow needle 29 is completely extended out of the distal end of the expansion tube 27. Therefore, during the atrial septal puncture, after the expansion tube 27 carries the puncture tube 28 to the atrial septum of the heart, the doctor operates the control handle 1 to first press the push button 4 to release the lock and then push the push button 4 to complete the puncture, and finally insert the guide wire 30 to form a tractable pathway for the next step of instrument delivery and treatment operation. After the puncture is completed, the push button 4 is released, and the push button 4 returns to its original position under the deformation rebound action of the first spring 23 and the second spring 33, and the control handle 1 locks the hollow needle 29 in the expansion tube 27 again.

[0037] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. Atrial septal puncture system, characterized in that: include: A control handle (1) is provided with a male shell (2), a female shell (3) and a push button (4) on the outside of the control handle (1), and a stress tube (5), a positioning tube (6), a sliding block (7) and a Luer seat (8) in sequence from far to near on the inside. The male shell (2) and the female shell (3) are fixedly plugged in and covered with each other from top to bottom, and form openings with the distal and proximal ends and one side of the outer wall. The middle part of the stress tube (5) is plugged in and fixed to the distal openings of the male shell (2) and the female shell (3). The middle part of the Luer seat (8) is plugged in and fixed to the proximal openings of the male shell (2) and the female shell (3). The middle part of the push button (4) is plugged in and fixed to the outer wall openings of one side of the male shell (2) and the female shell (3) and is slidably fixed. A hand touch part (9) and a transmission part (10) are respectively provided on both sides. The transmission part (10) is provided at the distal end. A first distal plug-in portion (11), a plurality of first proximal plug-in portions (12) are provided at the proximal end, a push piece (13) is provided at the upper part, a first tube slot (14) and a plurality of insertion holes (15) are provided on the lower wall, and first locking blocks (16) are provided on both sides. The sliding block (7) is provided with a second distal plug-in portion (17) at the distal end, a plurality of second proximal plug-in portions (18) are provided at the proximal end, and limiting sliders (19) are provided on both sides. A second tube slot (20) and a plurality of column holes (21) are provided on the upper wall, and a column (22) and a first spring (23) are provided in the column hole (21). The first spring (23) is fitted with the column (22), and the second distal plug-in portion (17), the second proximal plug-in portion (18), the column (22) and the first spring (23) all protrude out. The upper wall of the sliding block (7), the inner walls of the male shell (2) and the female shell (3) are provided with a limit clamp ring (24), a second locking block (25) and a limit sliding groove (26); the proximal end of the positioning tube (6) is fixed in the Luer seat (8), the middle part is fixed in the sliding block (7) and adhered to the second tube groove (20) for bonding and reinforcement; the distal end of the sliding block (7) is fixed in the limit clamp ring (24) and the outer sleeve is provided with a second spring (33); the second spring (33) is fixed between the sliding block (7) and the limit clamp ring (24); the first locking block (16) and the second locking block (25) correspond to each other, match each other, and are fixed by insertion; the first distal insertion part (11) and the second distal insertion part (17) match each other and slide after insertion. The first proximal plug-in portion (12) and the second proximal plug-in portion (18) correspond to each other, match each other, and are fixed by sliding after being inserted; the insertion hole (15) and the insertion column (22) correspond to each other, match each other, and are fixed by sliding after being inserted; the limiting slide groove (26) and the limiting slider (19) correspond to each other, match each other, and are fixed by sliding after being inserted; the pushing piece (13) is located above the second distal plug-in portion (17) and the second proximal plug-in portion (18); a gap is left between the end face of the insertion column (22) and the bottom face of the insertion hole (15); the two ends of the first spring (23) respectively abut against the bottom face of the insertion hole (15) and the bottom face of the column hole (21); an expansion tube (27); the proximal end of the expansion tube (27) is fixed in the stress tube (5) by bonding and reinforcement;The puncture tube (28) has a proximal end that is inserted into the Luer seat (8) and fixed by bonding, and the middle part is fitted into the positioning tube (6) and fixed by bonding, and the distal end is provided with a hollow needle (29) and inserted into the expansion tube (27), and the hollow needle (29) is hidden in the distal end of the expansion tube (27); the guide wire (30) is fitted into the puncture tube (28), and its proximal end extends out of the proximal end of the Luer seat (8); the hand touch part (9) is pressed to the insertion The end face of the column (22) abuts against the bottom face of the socket (15), the first locking block (16) and the second locking block (25) are disengaged, the pushing piece (13) is fixed between the second distal plug-in portion (17) and the second proximal plug-in portion (18), the first tube placement groove (14) fits the positioning tube (6), and the hand touch portion (9) is continuously pushed toward the distal end of the expansion tube (27), the limiting slider (19) is in the limiting slide groove (26) and is in contact with the push button ( 4) sliding in the same direction, the hollow needle (29) extends out of the distal end of the expansion tube (27); wherein the guide wire (30) is an alloy wire, which is also an elbow guide wire, and its distal end has a curved shape that conforms to the heart chamber after being released; the first locking block (16) and the second locking block (25) are both composed of a plurality of wedge blocks (32) arranged in parallel, and the wedge blocks (32) in the first locking block (16) and the wedge blocks (32) in the second locking block (25) are parallel and opposite to each other. The first locking block (16) and the second locking block (25) are arranged in a reverse direction, and the first locking block (16) and the second locking block (25) are engaged in a toothed manner to achieve card insertion and fixation; the number of the column holes (21) is 4, and the 4 column holes (21) are distributed at the four end corners of the upper wall of the sliding block (7); the plug column (22), the first spring (23), and the plug hole (15) are consistent in number and distribution with the column holes (21); the four end corners are synchronously engaged to ensure smooth transmission between the push button (4) and the sliding block (7).

2. The atrial septal puncture system according to claim 1, characterized in that: The push button (4) and the limit slider (19) have the same displacement stroke length.

3. The atrial septal puncture system according to claim 2, characterized in that: When the push button (4) and the limit slider (19) are displaced to the maximum length, the hollow needle (29) is completely extended out of the distal end of the expansion tube (27).

4. The atrial septal puncture system according to claim 1, characterized in that: The middle portion of the hand-touch portion (9) bulges outwards and a friction texture (31) is provided on the outer wall. The friction texture (31) is in the form of a strip-shaped protrusion.

5. The atrial septal puncture system according to claim 1, characterized in that: The male shell (2) and the female shell (3) are bonded and reinforced when the card cover is inserted between them.

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