CN108420512B - Puncture device for cardiology - Google Patents

Abstract

The invention discloses a puncture device for cardiology, which belongs to the field of medical instruments and comprises an outer cylinder, an inner cylinder and a core cylinder which are sequentially sleeved from outside to inside, wherein corresponding positions of the inner cylinder and the core cylinder are respectively provided with a first extraction hole and a second extraction hole which are matched with each other, and an extraction cavity which is positioned on one side of a rotating rod and communicated with the second extraction hole is arranged in the core cylinder; the front end of the inner cylinder is connected with a buffer air bag in a clamping manner, the buffer air bag comprises a fixed bag body positioned right in front of the inner cylinder and an annular bag body connected to the periphery of the fixed bag body, the center of the rear side surface of the fixed bag body is rotatably connected with a rotating rod through a connecting block, and pulling ropes connected to the rotating rod are arranged on the annular bag body at equal intervals along the periphery of the annular bag body; the outer cylinder comprises a main cylinder body and an auxiliary cylinder body which are connected in a sliding mode, a reversing wheel is arranged on the main cylinder body, and a linkage rope bypassing the reversing wheel is connected between the auxiliary cylinder body and the inner cylinder. The invention has stronger protection effect on cardiac muscle and corresponding blood vessels, can buffer the vibration caused by the beating of the heart and avoids influencing the extraction of hydrops.

Description

Puncture device for cardiology

Technical Field

The invention relates to the field of medical instruments, in particular to a puncture device for cardiology.

Background

Clinically, the treatment of patients with pericardial fluid mostly adopts a puncturing method. At present, a traditional needle is generally adopted for puncture, and after the needle penetrates into a pericardium, because the heart beats all the time, the needle point easily stabs the cardiac muscle and even causes sudden cardiac arrest, so that great potential safety hazards exist. After the position of the puncture needle is determined, the position and the extraction speed of the liquid accumulation are not adjustable, so that the practical application of the puncture needle is influenced.

In patent publication No. CN 206333950U, a puncture device for cardiology department is disclosed, which comprises an outer cylinder, an inner cylinder, and a core cylinder; an annular friction belt is formed at the rear end of the inner wall of the outer cylinder; the inner tube front end is equipped with annular boss, and the spiro union has the closing cap on the annular boss, and the closing cap includes apron and caping wall, the apron is the hemisphere of arch forward, and during the application, apron top and pericardium contact can avoid stabbing cardiac muscle greatly. A rotating cavity is formed among the cover plate, the cover wall and the annular boss, a first front hole, a first middle hole and a first rear hole which are distributed at equal intervals along the axial direction are formed at the front end of the inner cylinder, a second front hole, a second middle hole and a second rear hole are respectively formed by walking a circle along the outer wall of the front end of the inner cylinder, and annular clamping grooves which are distributed at equal intervals and matched with the annular friction belt are formed at the rear half part of the outer wall of the inner cylinder; the core barrel comprises a core barrel main body and a rotary disc, a third front hole, a third middle hole and a third rear hole are formed in the core barrel main body in an axially equal indirect mode, the third front hole, the third middle hole and the third rear hole are communicated through rotating the core barrel, and therefore the insertion depth of the inner barrel and the speed of liquid collection can be adjusted when liquid collection is effectively conducted. However, it has the following disadvantages: firstly, the cross-sectional area of the sealing cover is always smaller than that of the outer cylinder, so that the possibility of puncturing the cardiac muscle and the corresponding blood vessel still exists; secondly, the cover has no elasticity, and when the cover contacts with the pericardium, the cover can vibrate along with the beating of the heart, and the extraction of effusion can be influenced.

Disclosure of Invention

1. Technical problem to be solved

The technical problem to be solved by the invention is to provide a puncture device for cardiology department, which has stronger protection effect on cardiac muscle and corresponding blood vessels, can buffer the vibration caused by the heartbeat, and avoids influencing the extraction of effusion.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

a puncture device for cardiology comprises an outer cylinder, an inner cylinder and a core cylinder which are sequentially sleeved in an interval manner from outside to inside, wherein the outline of the outer cylinder is in a medical pricking shape, an annular friction strip is formed at the rear end of the inner wall of the outer cylinder, annular clamping grooves which are distributed at equal intervals and are matched with the annular friction strip are formed at the rear half part of the outer wall of the inner cylinder, a first extraction hole and a second extraction hole which are matched with each other are respectively arranged at corresponding positions of the inner cylinder and the core cylinder,

the front end of the inner cylinder is connected with a buffering air bag in a clamping manner, the buffering air bag comprises a fixed bag body positioned right in front of the inner cylinder and an annular bag body connected to the periphery of the fixed bag body, the rear end of the annular bag body is clamped at the front end of the inner cylinder, the center of the rear side surface of the fixed bag body is connected with a rotating rod through a connecting block, the front end of the rotating rod is rotatably connected with the connecting block, the rear end of the rotating rod extends to the outer side of the rear end of the core cylinder along the central axis of the core cylinder, and pulling ropes connected to the rotating rod are arranged on; an extraction cavity which is positioned on one side of the rotating rod and communicated with the second extraction hole is arranged in the core barrel;

the outer barrel comprises a main barrel body with the inner concave outer wall of the front half part and an auxiliary barrel body connected to the front half part of the main barrel body in a sliding mode, and the outer wall of the auxiliary barrel body and the outer wall of the rear half part of the main barrel body are located in the same vertical plane. Considering that if the outer wall of the auxiliary cylinder body protrudes out of the outer wall of the rear half part of the main cylinder body, blood may overflow along the outer wall of the rear half part of the main cylinder body to cause blood loss of a patient, and pericardial effusion extraction may be influenced and related medical appliances are contaminated; if the outer wall of the auxiliary cylinder body is concave relative to the outer wall of the rear half part of the main cylinder body, obvious blockage can occur when the auxiliary cylinder body is transited to the rear half part of the main cylinder body in the puncture process, and peripheral vascular cells are easily scratched. Therefore, locate the outer wall of the latter half of the outer wall of the auxiliary cylinder body and main cylinder body in the same vertical plane, can avoid above-mentioned problem, be equipped with the sliding tray and the slider of looks adaptation on main cylinder body and the auxiliary cylinder body respectively, the slider rear side is fixed with the spring that is connected to the sliding tray rear end, main cylinder body front end cross-section is the arc, auxiliary cylinder body front end cross-section is the diagonal form, under the initial condition, auxiliary cylinder body and main cylinder body's front end is located same inclined plane, be equipped with the reversing wheel on the main cylinder body, be connected with the linkage rope that sets up along the periphery equidistant between auxiliary cylinder body and the inner tube, the reversing wheel is walked around to the linkage rope, and the two link ends of linkage rope all are located reversing wheel the place ahead.

Furthermore, three extraction holes I are spirally arranged on the inner cylinder at equal intervals along the circumference of the inner cylinder, and three extraction holes II which are longitudinally aligned and are respectively positioned in the same cross section with the three extraction holes I are arranged on the core cylinder. So set up, the corresponding extraction hole two of intercommunication in the lump is in the same place in the extraction hole of optional difference to the inner tube depth of insertion's when can realize effectively extracting the hydrops regulation, the difference of adaptable different patient extraction positions.

Furthermore, an anti-slip ferrule is arranged at the rear end part of the core barrel. Can ensure the stability of the process of propelling the core barrel and the inner barrel and prevent slipping.

Furthermore, the rear end of the rotating rod is provided with a rotating handle. The rotating rod can be conveniently driven to rotate, and the operation is convenient.

3. Advantageous effects

(1) The front end of the inner cylinder is connected with a buffering air bag, the buffering air bag comprises a fixed bag body and an annular bag body connected to the periphery of the fixed bag body, the center of the rear side surface of the fixed bag body is rotatably connected with a rotating rod, and pulling ropes connected to the rotating rod are arranged on the annular bag body at equal intervals along the periphery of the annular bag body. In application, when the buffering air bag moves out of the outer barrel, the annular bag body automatically expands, the protection range is expanded, the tip of the outer barrel is shielded, and the myocardial puncture and the corresponding blood vessel puncture can be prevented.

(2) The outer cylinder comprises a main cylinder body with a concave outer wall at the front half part and an auxiliary cylinder body connected with the front half part of the main cylinder body in a sliding manner, wherein a reversing wheel is arranged on the main cylinder body, and a linkage rope bypassing the reversing wheel is connected between the auxiliary cylinder body and the inner cylinder. In application, the inner cylinder moves forwards along with the extension of the buffer air bag, one end of the linkage rope connected with the inner cylinder moves forwards, one end of the linkage rope connected with the auxiliary cylinder retreats under the action of the reversing wheel, the auxiliary cylinder is pulled to move backwards, and therefore the myocardial puncture and the corresponding blood vessel puncture are further prevented; the front end part of the outer cylinder is the front end part of the main cylinder body, and the front end part of the outer cylinder is an arc surface, so that the cardiac muscle cannot be punctured. And the two protection mechanisms can realize linkage and synchronization, and are simple to control.

(3) According to the invention, the front end of the inner cylinder is connected with the buffering air bag which has elasticity, and when the buffering air bag contacts with the pericardium, the buffering air bag can buffer vibration along with the beating of the heart, so that the stability of the inner cylinder and the core cylinder is ensured, and the influence on the extraction of effusion is avoided. And the deformation capability and the recovery capability of the air bag are stronger, so that the air bag is convenient to control the air bag to be folded and unfolded, and is more convenient to apply.

In conclusion, the invention can play a dual protection function on cardiac muscle and corresponding blood vessels, and the two protection mechanisms can realize linkage and synchronization and have simple control; and the buffering gasbag possesses elasticity, can cushion the vibration that the heart beats and arouses, and then guarantees the stability of inner tube and core section of thick bamboo, avoids influencing the extraction of hydrops.

Drawings

FIG. 1 is a schematic structural diagram of the present invention in an initial state;

fig. 2 is a schematic structural diagram of the present invention in an operating state.

Reference numerals: 1-outer cylinder, 2-inner cylinder, 3-core cylinder, 4-annular friction strip, 5-annular clamping groove, 6-extraction hole I, 7-extraction hole II, 8-buffer air bag, 9-connecting block, 10-rotating rod, 11-pulling rope, 12-extraction cavity, 13-sliding groove, 14-sliding block, 15-spring, 16-reversing wheel, 17-linkage rope, 18-anti-slip ferrule, 19-rotating handle, 81-fixed capsule, 82-annular capsule, 101-main cylinder and 102-auxiliary cylinder.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Examples

The puncture device for the cardiology department as shown in fig. 1 and 2 comprises anouter cylinder 1, an inner cylinder 2 and acore cylinder 3 which are sequentially sleeved in a clearance manner from outside to inside, wherein the outline of theouter cylinder 1 is in a medical pricking needle shape, anannular friction strip 4 is formed at the rear end of the inner wall of theouter cylinder 1,annular clamping grooves 5 which are distributed at equal intervals and matched with theannular friction strip 4 are formed at the rear half part of the outer wall of the inner cylinder 2, an extraction hole I6 and an extraction hole II 7 which are matched with each other are respectively arranged at corresponding positions of the inner cylinder 2 and thecore cylinder 3,

the front end of the inner cylinder 2 is connected with a buffering air bag 8 in a clamping manner, the buffering air bag 8 comprises a fixedbag body 81 positioned right in front of the inner cylinder 2 and anannular bag body 82 connected to the periphery of the fixedbag body 81, the rear end of theannular bag body 82 is clamped at the front end of the inner cylinder 2, the center of the rear side surface of the fixedbag body 81 is connected with a rotatingrod 10 through a connecting block 9, the front end of the rotatingrod 10 is rotatably connected with the connecting block 9, the rear end of the rotatingrod 10 extends to the outer side of the rear end of thecore cylinder 3 along the central axis of thecore cylinder 3, and pullingropes 11 connected to the rotatingrod 10 are arranged; anextraction cavity 12 which is positioned at one side of the rotatingrod 10 and communicated with thesecond extraction hole 7 is arranged in thecore barrel 3;

theouter cylinder 1 comprises amain cylinder body 101 and anauxiliary cylinder body 102, wherein the outer wall of the front half portion of themain cylinder body 101 is concave, theauxiliary cylinder body 102 is slidably connected to the front half portion of themain cylinder body 101, slidinggrooves 13 and slidingblocks 14 which are matched are respectively formed in themain cylinder body 101 and theauxiliary cylinder body 102, aspring 15 connected to the rear side end of eachsliding groove 13 is fixed to the rear side of each slidingblock 14, the cross section of the front end portion of themain cylinder body 101 is arc-shaped, the cross section of the front end portion of eachauxiliary cylinder body 102 is oblique-line-shaped, in an initial state, the front end portions of theauxiliary cylinder body 102 and themain cylinder body 101 are located in the same oblique plane, a reversingwheel 16 is arranged on themain cylinder body 101, alinkage rope 17 which is arranged at equal intervals along the circumference is connected between theauxiliary cylinder body 102 and the inner.

In this embodiment, the inner cylinder 2 is provided with threefirst extraction holes 6 at equal intervals along the circumference thereof in a spiral manner, and thecore cylinder 3 is provided with threesecond extraction holes 7 which are longitudinally aligned and respectively located in the same cross section with the threefirst extraction holes 6. So set up, the corresponding extraction hole two 7 ofextraction hole 6 and intercommunication of optional difference to can realize the regulation of inner tube 2 depth of insertion when effectively extracting the hydrops, the difference of adaptable different patient extraction positions.

In this embodiment, the rear end of thecartridge 3 is provided with ananti-slip ferrule 18. Can ensure the stability of the process of propelling thecore barrel 3 and the inner barrel 2 and prevent slipping.

In this embodiment, the rear end of the rotatingrod 10 is provided with arotating handle 19. The rotatingrod 10 can be conveniently driven to rotate, and the operation is convenient.

In this embodiment, the outer wall of thesub-cylinder 102 is in the same vertical plane as the outer wall of the rear half of themain cylinder 101. Considering that if the outer wall of theauxiliary cylinder 102 protrudes out of the outer wall of the rear half part of themain cylinder 101, blood may overflow along the outer wall of the rear half part of themain cylinder 101 to cause blood loss of a patient, and pericardial effusion extraction may be affected and related medical appliances may be contaminated; if the outer wall of theauxiliary cylinder 102 is recessed relative to the outer wall of the rear half part of themain cylinder 101, significant blockage occurs when theauxiliary cylinder 102 is transited to the rear half part of themain cylinder 101 in the puncturing process, and peripheral vascular cells are easily scratched. Therefore, the outer wall of thesub-cylinder 102 and the outer wall of the rear half of themain cylinder 101 are provided in the same vertical plane, thereby avoiding the above-mentioned problem.

The specific application process of the puncture device for the cardiology department is as follows:

(1) the front end of theauxiliary cylinder 102 starts to puncture until theouter cylinder 1 punctures in place, then the position of theouter cylinder 1 is kept unchanged, the rotatingrod 10 is pushed forward first, theannular bag body 82 is pushed forward to be separated from the inner cylinder 2, then the rotatingrod 10, thecore cylinder 3 and the inner cylinder 2 are pushed forward together, when the buffer air bag 8 moves out of theouter cylinder 1, theannular bag body 82 automatically expands, the protection range is expanded, the tip of theouter cylinder 1 is shielded, and the myocardium can be prevented from being punctured by theannular bag body 82; meanwhile, with the forward movement of the inner cylinder 2, one end of thelinkage rope 17 connected with the inner cylinder 2 moves forward, under the action of the reversingwheel 16, one end of thelinkage rope 17 connected with theauxiliary cylinder 102 moves backward, theauxiliary cylinder 102 is pulled to move backward, thespring 15 is compressed, the front end part of theouter cylinder 1 is the front end part of themain cylinder 101, and the front end part is an arc surface, so that cardiac muscle cannot be punctured; then the buffering air bag 8 contacts the pericardium, the beating of the heart hits the front side surface of the buffering air bag 8, the buffering air bag 8 plays a good role in buffering, and the stability of the inner barrel 2 and thecore barrel 3 can be ensured; when the proper extraction hole I6 reaches the extraction position, stopping pushing and enabling the correspondingannular clamping groove 5 to be clamped on theannular friction strip 4 so as to keep the inner barrel 2 relatively stable; then thecore barrel 3 is rotated to ensure that the selectedfirst extraction hole 6 is superposed and communicated with the correspondingsecond extraction hole 7, and then the effusion extraction can be started;

(2) when the amount of the accumulated liquid to be extracted reaches the required amount, thecore barrel 3 is rotated to ensure that thesecond extraction hole 7 is not superposed with thefirst extraction hole 6, namely the accumulated liquid is blocked from being extracted; then the rotatingrod 10 is rotated to wind thepulling rope 11, thepulling rope 11 is tensioned, theannular capsule body 82 is pulled to be folded, then the rotatingrod 10 is pulled backwards to enable theannular capsule body 82 to be clamped on the inner cylinder 2, the rotatingrod 10, thecore cylinder 3 and the inner cylinder 2 are pulled backwards together to retract theouter cylinder 1, and then the rotatingrod 10 is rotated reversely to enable thepulling rope 11 to be loosened; meanwhile, with the backward movement of the inner cylinder 2, one end of thelinkage rope 17 connected with the inner cylinder 2 is loosened, theauxiliary cylinder 102 moves forwards and resets due to the reset action of thespring 15, and one end of thelinkage rope 17 connected with theauxiliary cylinder 102 moves forwards, so that thelinkage rope 17 is ensured to be always kept in a tensioned state; and finally, pulling out the puncture device.

According to the content, the dual-protection mechanism can play a dual-protection function on cardiac muscle and corresponding blood vessels, and the two protection mechanisms can realize linkage and synchronization and are simple to control; and the buffering gasbag possesses elasticity, can cushion the vibration that the heart beats and arouses, and then guarantees the stability of inner tube and core section of thick bamboo, avoids influencing the extraction of hydrops.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be construed as limiting the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims (4)

1. A puncture device for cardiology department comprises an outer barrel (1), an inner barrel (2) and a core barrel (3) which are sequentially sleeved in an interval manner from outside to inside, wherein the outline of the outer barrel (1) is in a medical needle shape, an annular friction strip (4) is formed at the rear end of the inner wall of the outer barrel (1), a plurality of annular clamping grooves (5) which are distributed at equal intervals and are matched with the annular friction strip (4) are formed at the rear half part of the outer wall of the inner barrel (2), and an extraction hole I (6) and an extraction hole II (7) which are matched with each other are respectively arranged at the corresponding positions of the inner barrel (2) and the core barrel (3),

the front end of the inner cylinder (2) is connected with a buffering air bag (8) in a clamping manner, the buffering air bag (8) comprises a fixed bag body (81) located right in front of the inner cylinder and an annular bag body (82) connected to the periphery of the fixed bag body (81), the rear end of the annular bag body (82) is clamped at the front end of the inner cylinder (2), the center of the rear side surface of the fixed bag body (81) is connected with a rotating rod (10) through a connecting block (9), the front end of the rotating rod (10) is rotatably connected with the connecting block (9), the rear end of the rotating rod (10) extends to the outer side of the rear end of the core cylinder (3) along the central axis of the core cylinder (3), and pulling ropes (11) connected to the rotating rod (10) are arranged on the annular; an extraction cavity (12) which is positioned at one side of the rotating rod (10) and communicated with the second extraction hole (7) is arranged in the core barrel (3);

the outer cylinder (1) comprises a main cylinder body (101) with the inner concave outer wall of the front half part and an auxiliary cylinder body (102) connected to the front half part of the main cylinder body (101) in a sliding mode, the outer wall of the auxiliary cylinder body (102) and the outer wall of the rear half part of the main cylinder body (101) are located in the same vertical plane, a sliding groove (13) and a sliding block (14) which are matched with each other are respectively arranged on the main cylinder body (101) and the auxiliary cylinder body (102), a spring (15) connected to the rear side end of the sliding groove (13) is fixed to the rear side of the sliding block (14), the section of the front end part of the main cylinder body (101) is arc-shaped, the section of the front end part of the auxiliary cylinder body (102) is oblique, the section of the front end part of the auxiliary cylinder body (102) and the front end part of the main cylinder body (101) are located in the same oblique plane in an initial state, a reversing wheel (16) is arranged on the main cylinder, the linkage rope (17) bypasses the reversing wheel (16), and two connecting ends of the linkage rope (17) are positioned in front of the reversing wheel (16).

2. A puncture device for cardiology department according to claim 1, wherein the inner barrel (2) has three first extraction holes (6) spirally and equally spaced around its circumference, and the cartridge (3) has three second extraction holes (7) longitudinally aligned and respectively located in the same cross section as the three first extraction holes (6).

3. A puncture device for cardiology according to claim 1, wherein the cartridge (3) has a slip-resistant collar (18) at the rear end.

4. A puncture device for cardiology according to claim 1, wherein the rotating lever (10) is provided with a rotating handle (19) at a rear end thereof.

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