35 results about "Atriocaval shunt" patented technology

The invention discloses an atrial shunt. The atrial shunt is characterized by comprising a right plate surface and a left plate surface which are connected through a waist part, the right plate surface and the left plate surface are provided with a net opening of the right plate surface and a net opening of the left plate surface respectively, the net opening of the right plate surface and the net opening of the left plate surface are communicated, the right plate surface is provided with a wired steel bushing, and the left plate surface is provided with a threaded steel bushing. The atrial shunt is high in adaptability, the sizes of stomas can be maintained, blood flowing is kept, and it is guaranteed that the stomas are not healed for a long time. The plate surfaces of the atrial shunt have certain clamping force on an atrial septum, and the atrial shunt can be stably fixed to the atrial septum and cannot easily fall off or shake. Endothelialization can be quickly achieved between faces, making contact with each other, of the atrial shunt and muscle of the atrial septum, and circulation performance of left and right interatrial holes is not affected. The atrial shunt does not occupy atria, and cannot cause coagulation and thrombi easily. By means of the atrial shunt, operations are convenient, and the atrial shunt can be used through conventional interventional operations.

Interatrial shunts having incorporated physiologic sensors are provided for monitoring and treating cardiovascular syndromes, including heart failure and pulmonary hypertension, in which the one or more sensors are affixed to the shunt to measure a physiologic parameter within the interatrial shunt. The one or more sensors may be directly affixed to or within a lumenal surface of the shunt or may be disposed on a support structure in a spaced relation to the shunt lumen, the one or more sensors disposed at locations subject to little or no pannus formation or cardiac wall motion artifact.

The invention relates to the technical field of medical instruments, in particular to a conveying device of an atrial shunt. The device comprises a conveying structure, an expansion structure and a loading structure, the conveying structure comprises a conveying sheathing canal and a conveying handle, the expansion structure comprises an expansion catheter and a reaming piece handle, the loading structure comprises a shunt loading part and a pushing part, a first circular truncated cone is arranged at the far end of the conveying sheathing canal, the lower portion of the proximal end of the first circular truncated cone is provided with a first curved part, the far end of the dilation catheter is provided with a second circular truncated cone, and the lower portion of the proximal end of the second circular truncated cone is provided with a second curved part. The conveying device of the atrial shunt is simple in structure and low in cost, popularization and application of the conveying device in the field of medical instruments are facilitated, meanwhile, conveying of the conveying device is smoother, the sealing performance of the system is high, the preparation process is simplified, and the process cost is greatly reduced.

The invention belongs to the technical field of medical instruments, and particularly relates to a device for shunting and decompressing an atrium. The shunting and decompressing device is connected with a conveyor, and comprises a wire harness collector, a left atrium wall fixing structure, a middle connecting channel and a right atrium wall fixing structure, wherein the left atrium wall fixing structure communicates with the right atrium wall fixing structure through the middle connecting channel; one end of the wire harness collector is connected with the left atrium wall fixing structure,and the other end of the wire harness collector is connected with the conveyor; and the left atrium wall fixing structure and the right atrium wall fixing structure are pressed against the two sides of an atrium wall respectively, and are connected with the atrium through the middle connecting channel to shunt and decompress the atrium. By adopting the device, the pressure of the atrium can be lowered, the service life of the atrium is prolonged, heart failure is relieved, and the surgical success rate and surgical operation convenience are increased.

The invention relates to an atrial shunt instrument and a stoma instrument. The atrial shunt instrument comprises a traction piece, a cutting piece, a sheathing canal and a control handle, wherein the traction piece, the cutting piece and the sheathing canal are all connected with the control handle; the traction piece is movably contained in the sheathing canal and used for pulling tissue to be cut into the sheathing canal; the control handle comprises a traction piece control assembly and a limiting piece, the traction piece control assembly controls the traction piece to be movably contained in the sheathing canal, and the limiting piece is used for locking the relative position of the traction piece and the sheathing canal; the cutting piece comprises a cutting part; and the cutting part is connected with a radio frequency power supply connector, so the cutting part is electrified to carry out electric cutting when being electrified. When the atrial shunt instrument is used for stoma shunt, a stent does not need to be implanted, and an opening can be prevented from being closed.

The invention discloses a conveying device for an atrial shunt. The conveying device comprises an atrial shunt, an expansion structure used for atrial septum puncture and pore forming, a conveying structure providing a shunt conveying channel, a loading structure used for collecting the atrial shunt, an adjustable hemostasis structure used for preventing blood from flowing out and a pushing structure used for conveying the atrial shunt to the atrial septum and releasing the atrial shunt. The loading structure is connected with the conveying structure and the adjustable hemostasis structure, and the adjustable hemostasis structure is connected with the loading structure; the expansion structure comprises an expansion catheter and a puncture guide wire; the pushing structure comprises a pushing rod, and the conveying structure is formed by the expansion catheter, the puncture guide wire, the atrial shunt and the pushing rod to enter the heart position. The conveying device can help the atrial shunt to be successfully connected with the left atrium and the right atrium, reduces atrial pressure, prolongs the service life of the atrium, relieves heart failure, improves the success rate of surgery and the convenience of surgery operation, is beneficial to long-term health of a patient, and meanwhile is simple in structure and low in manufacturing cost.

The invention discloses an atrial shunt implant stent. The atrial shunt implantation stent comprises a first stent and a second stent, wherein the first stent comprises a first channel part, an inlet part and an outlet part, and the inlet part and the outlet part are respectively connected to two ends of the first channel part; the first stent has an unfolding state and a contraction state; in the unfolding state, the outer diameter of the inlet part and the outer diameter of the outlet part are both larger than the outer diameter of the first channel part; in the contraction state, the outer diameter of the inlet part and the outer diameter of the outlet part are the same with the outer diameter of the first channel part; the second stent is provided with a second channel part; the second stent is in sleeving and is fixed in the first channel part; the second channel part has an initial state and an expansion state, and the second channel part can be switched from the initial state to the expansion state; and in an initial state, the second channel portion has a first inner diameter, and in an expansion state, the second channel portion has a second inner diameter, wherein the second inner diameter is greater than the first inner diameter.

The present disclosure discloses an atrial shunt implanting device. The atrial shunt implanting device comprises a support; the support is provided with a first end, a middle channel part and a second end which are sequentially arranged in the first direction, and the middle channel part is connected with the first end and the second end; the middle channel part has a contraction state and an expansion state in the second direction; in the contraction state, the middle channel part has a first inner diameter in the middle position of the first direction; in the expansion state, the middle channel part has a second inner diameter in the middle position of the first direction; the second inner diameter is larger than the first inner diameter; and the minimum inner diameter of the first end and the minimum inner diameter of the second end are both larger than the first inner diameter and smaller than the second inner diameter.

The invention discloses an atrial shunt conveying device. The atrial shunt conveying device is provided with a catheter sheath structure, wherein the catheter sheath structure is provided with a pre-bent sheath tube and a catheter sheath handle, wherein the far section of the pre-bent sheath tube is bent; the catheter sheath handle is communicated with the near end of the pre-bent sheath tube and is provided with a hollow cylindrical main body; a sealing gasket with a needle hole is arranged in the cylindrical main body and is provided with a flat sealing gasket and a bent sealing gasket; the bent sealing gasket is tightly attached to the flat sealing gasket. According to the atrial shunt conveying device, the bent sealing gasket in the conventional catheter sheath handle is adjusted into a double-layer sealing gasket, the thickness of each layer of sealing gasket is only half of that of the sealing gasket in the prior art, the sealing gasket close to the near end is changed into a planar sealing gasket, and the sealing gasket at the far end is still bent. The bending amplitude, namely the curvature radius, is adjusted, so that the passing easiness and the sealing property can be guaranteed after an instrument passes through the atrial shunt conveying device. The flat sealing gasket guarantees the sealing property when no instrument passes through the atrial shunt conveying device.

The invention discloses a conveying system for an atrial shunt. The conveying system comprises a conveying structure and a control structure for controlling the axial movement of the conveying structure, the conveying structure comprises a conveying sheathing canal and a pushing rod penetrating through the conveying sheathing canal; the control structure comprises a control part and a conduction part which are connected with each other; the far end of the conduction part is connected with the pushing rod, the control part is rotated to drive the conduction part to move, and then the conduction part drives the pushing rod to move along a channel formed by the conveying sheath tube. The loading, conveying and releasing functions of a traditional atrial shunt conveying device are integrated on one handle, the complexity of the device is reduced, operation is easy, and the receiving speed of a doctor to the device is increased. Finally, the control structure is divided into the first control part and the second control part, and the requirements for refinement and operation time saving in actual operation are flexibly met.

The invention relates to the technical field of medical equipment, in particular to a hole cutting type non-implanted atrial shunt device. The device comprises an outer tube and an inner tube arrangedin the outer tube, wherein the end part of one of the outer tube and the inner tube is connected with an ablation assembly; the other end of the other of the outer tube and the inner tube is connected with an anastomosis assembly; the ablation assembly is connected with a radio frequency ablation instrument; and when the inner tube and/or the outer tube are/is moved, and the ablation assembly andthe anastomosis assembly move oppositely to cut an atrial septum located between the ablation assembly and the anastomosis assembly. A hole is formed in a radio frequency mode by using the ablation assembly and the anastomosis assembly, and the formed hole is not prone to being closed again and allows left atrial blood pressure to be effectively guided to the right atrium, so the purpose of treatment is achieved.

Devices are provided with an internal dimension that can be reduced and increased in vivo. In one example, an interatrial shunt for placement at an atrial septum of a patient's heart includes a body. The body includes first and second regions coupled in fluid communication by a neck region. The body includes a shape-memory material. The body defines a passageway through the neck region for blood to flow between a first atrium and a second atrium. The first and second regions are superelastic at body temperature, and the neck region is malleable at body temperature. A flow area of the passageway through the neck region may be adjusted in vivo.

The invention relates to a lockable rivet-free biological atrial shunt device, and belongs to the technical field of medical instruments. The device comprises an upper disc surface, a waist part, a lower disc surface, a shunt hole and a locking structure, the waist part for connecting the upper disc surface and the lower disc surface is arranged between the upper disc surface and the lower disc surface, the shunt hole is formed in the waist part, the two ends of the shunt hole are respectively opened on the disc surfaces of the upper disc surface and the lower disc surface, and a through hole is formed between the openings at the two ends; and the locking structure is arranged between the lower disc surface and the upper disc surface on the outer side of the waist part. The atrial shunt device provided by the invention is made of a biodegradable material, adopts a rivet-free design, is provided with a lockable form and can be developed; the product provided by the invention can be locked, and a shunt can be firmly fixed at a defect position, so that the stability of the shunt after implantation is greatly improved; the device can be used for treating heart failure.

The present disclosure discloses an atrial shunt implantation instrument. The atrial shunt implantation instrument comprises a support and a flow adjusting part, wherein a first channel part is arranged in the support; the flow adjusting part is connected with the support, the flow adjusting part is provided with a second channel part, the second channel part coaxially communicates with the first channel part, and the second channel part has a contraction state and an unfolding state along the radial direction; in the contraction state, the inner diameter of the second channel part has a first preset value; and in the unfolding state, the inner diameter of the second channel part has a second preset value, wherein the first preset value is smaller than the second preset value.

The invention discloses a conveying device of an atrial shunt. The conveying device comprises a conveying structure, an emptying structure and a pushing structure. The conveying structure is provided with a guide catheter and a conveying catheter; emptying structures are arranged at the near ends of the guide catheter and the conveying catheter; the guiding catheter serves as a path of an external guide wire, and the conveying catheter is provided with a path for conveying of the atrial shunt. And the pushing structure controls the external atrial shunt to move along the conveying path of the conveying catheter. According to the conveying structure of the atrial shunt, the conveyor entering process and the loader entering process in the traditional atrial shunt implantation operation process are integrated, the operation time is shortened, and meanwhile a new standard module is provided for design of the atrial shunt or a plugging device.