75 results about "Purse string suture" patented technology

A delivery system and method for delivering a prosthetic heart valve to the aortic valve annulus. The system includes a balloon catheter having a steering mechanism thereon for delivering a balloon-expandable prosthetic heart valve through an introducer in an antegrade fashion to the aortic annulus. The balloon catheter passes through an introducer that accesses the left ventricle through its apex and a small incision in the chest wall. The balloon catheter includes a deflecting segment just proximal to the distal balloon to facilitate positioning of the prosthetic heart valve in the proper orientation within the aortic annulus. A slider in a deflection handle may be coupled to a deflection wire that actuates the deflecting segment. The method includes using two concentric rings of purse-string sutures around the puncture in the left ventricular apex to maintain a good seal around instruments passed therethrough. The prosthetic heart valve may be installed over the existing calcified leaflets, and a pre-dilation valvuloplasty procedure may also be utilized.

An anvil assembly comprising an anvil shaft and an anvil head, the anvil head having anvil depressions for forming surgical staples, and the anvil head mounted to the anvil shaft. The anvil shaft has a longitudinal axis and a helical slot formed therein. A disc is movable along the slot to a selected position to selectively adjust the positioning of a purse string suture.

A method for modifying a heart valve annulus includes placing a purse string suture at a puncture site adjacent a heart valve, inserting at least one delivery member through the puncture site, positioning a distal end of the at least one delivery member adjacent a portion of a valve annulus, deploying an annuloplasty device carried within the at least one delivery member and implanting the annuloplasty device into the valve annulus. The method also includes reshaping the heart valve annulus after implantation of the at least one annuloplasty device.

A delivery system and method for delivering a prosthetic heart valve to the aortic valve annulus. The system includes a balloon catheter having a steering mechanism thereon for delivering a balloon-expandable prosthetic heart valve through an introducer in an antegrade fashion to the aortic annulus. The balloon catheter passes through an introducer that accesses the left ventricle through its apex and a small incision in the chest wall. The balloon catheter includes a deflecting segment just proximal to the distal balloon to facilitate positioning of the prosthetic heart valve in the proper orientation within the aortic annulus. A slider in a deflection handle may be coupled to a deflection wire that actuates the deflecting segment. The method includes using two concentric rings of purse-string sutures around the puncture in the left ventricular apex to maintain a good seal around instruments passed therethrough. The prosthetic heart valve may be installed over the existing calcified leaflets, and a pre-dilation valvuloplasty procedure may also be utilized.

A system for forming a purse string suture, including a suture applicator having a proximal handle having a suture spool mounted thereon or in an internal chamber. A length of suture is partly wound on the spool, and a hollow suture needle extends from a distal end of the handle and contains a free end of the length of suture. The suture needle projects distally from the handle in a helical shape and terminates in a sharp distal tip with an opening in one side close to the distal tip. The free end of the length of suture may extend out of the distal tip and back into the hollow suture needle through the opening. The suture needle may have a deflection segment adjacent the distal tip that is more flexible than the rest of the helical distal portion of the suture needle. A linear hollow pivot shaft extends from a distal end of the handle substantially along an axis of the helical distal portion of the suture needle. The pivot shaft has a blunt tip with a substantially larger radial profile than the shaft to prevent puncturing tissue.

A surgical purse-string suture device is composed of the shell with suture head and handle. The drive plate and pin cabin are in said suture head. The pin driving plate and pin shaping and guiding slot are in said pin cabin. The string bearing hole and the string fixer, through which the purse-string passes, are arranged at the lateral surface of suture head for putting the string between two pin feet. Its advantages are simple structure and short suture time.

An instrument for use in the treatment of prolapsed hemorrhoids by applying a purse-string suture, comprises a tube (1), which has a distal end (2), with which it can be inserted forward into the rectum of a patient, an open proximal end (3) and a shell wall (5) encompassing an inner hollow space (4) and provided with an elongated opening (12), which extends in the axial direction of the tube (1) from a distal end (14) to a proximal end (13), and a closure device (15), which in a closing position closes the opening (12) and by which the opening (12) can be successively exposed from the distal to the proximal end. (FIG. 11 )

An instrument for use in the treatment of prolapsed hemorrhoids by applying a purse-string suture includes a tube, which has a distal end, with which it can be inserted forward into the rectum of a patient. The tube also has an open proximal end and a shell wall encompassing an inner hollow space and is provided with an elongated opening. The opening extends in the axial direction of the tube from a distal end to a proximal end. The instrument also includes a closure device, which in a closing position closes the opening and by which the opening can be successively exposed from the distal to the proximal end.

A system for stabilizing the heart via a helical needle, providing access to the interior of the heart via an introducer sheath, and forming a purse string suture using suture delivered by the helical needle. A helical needle projects distally from the device and terminates in a sharp distal tip. The helical needle is advanced into the heart wall, and is used to stabilize the heart and to pass a purse string suture through the heart tissue. An access port provides access to the interior of the heart via an opening passing through the heart wall in an area circumscribed by the helical needle. The helical needle may have a deflection segment adjacent the distal tip that is more flexible than the rest of the helical distal portion of the helical needle.

A system for forming a purse string suture, including a suture applicator having a proximal handle, a length of suture wound on a spool, and a hollow suture needle extending from a distal end of the handle. The suture needle projects distally from the handle in a helical shape and terminates in a sharp distal tip with an opening in one side close to the distal tip. A free end of the length of suture may extend out of the distal tip and back into the hollow suture needle through the opening. The suture needle may have a deflection segment adjacent the distal tip that is more flexible than the rest of the helical distal portion of the suture needle. A linear hollow pivot shaft extends from a distal end of the handle substantially along an axis of the helical distal portion of the suture needle.

An anvil assembly comprising an anvil shaft and an anvil head, the anvil head having anvil depressions for forming surgical staples, and the anvil head mounted to the anvil shaft. The anvil shaft has a longitudinal axis and a helical slot formed therein. A disk is movable along the slot to a selected position to selectively adjust the positioning of a purse string suture.

The invention relates to an anastomat for mucous membranes on haemorrhoids, and the anastomat can treat the haemorrhoids and rectum mucous membrane prolapsed. The anastomat is formed by combining an anastomat head plate, a hollow connecting rod (with negative pressure holes), a girdling knife, a nailing needle, an anastomat body, an adjusting nut and a hand shank, and mucous membranes tissues on the haemorrhoids are sucked among the anastomat head plate, the girdling knife and the nailing needle by the utilization of negative pressure to replace an existing method of manual purse-string suture. The distance among the anastomat head plate, the girdling knife and the nailing needle is reduced through the adjusting nut, and then a nailing and girdling synchronous operation is performed.

The invention relates to the technical field of medical equipment, and discloses an end effector and a surgical operating instrument comprising the end effector in order to simplify the operation process of a lumen tissue operation and shorten the operation time. The end effector comprises a first forceps arm, a second forceps arm, a suture mechanism, a purse-string suture mechanism and a cutting mechanism, wherein the first forceps arm and the second forceps arm can move relatively under the effect of an opening and closing mechanism so as to enable a forceps opening formed by the first forceps arm and the second forceps arm to be opened or closed, the suture mechanism is arranged on one side of the longitudinal direction of the two forceps arms, the purse-string suture mechanism is arranged on the other side of the longitudinal direction of the two forceps arms, and the cutting mechanism is arranged between the suture mechanism and the purse-string suture mechanism. The invention further provides purse-string forceps. The purse-string forceps can prevent needles from falling and improve the safety of the operation.

The invention relates to the technical field of medical equipment, and discloses an end effector, a surgical operating instrument and purse-string forceps in order to simplify the operation process of a lumen tissue operation, shorten the operation time and relieve trauma brought to a surgery patient. The end effector comprises a first forceps arm, a second forceps arm, a suture mechanism, a purse-string suture mechanism and a cutting mechanism, wherein the suture mechanism is arranged on one side of the longitudinal direction of the two forceps arms, the purse-string suture mechanism is arranged on the other side of the longitudinal direction of the two forceps arms, and the cutting mechanism is arranged between the suture mechanism and the purse-string suture mechanism. The purse-string suture mechanism comprises a binding band arranged on the first forceps arm in the longitudinal direction, the binding band is detachably connected with the first forceps arm and is provided with a bonding portion capable of being bonded with lumen tissue, and the bonding action force between the binding band and the lumen tissue is larger than the connecting action force between the binding band and the first forceps arm.

The invention provides an automatic purse-string device, which comprises a nail cylinder and a nail warehouse, wherein the annular end face of the nail warehouse is provided with a ring of annularly arranged nail warehouse holes which are arranged radially; a line carrying groove in the circumferential direction is also arranged on the annular end face of the nail warehouse; nails are arranged ineach nail warehouse hole respectively; and purse-string lines are arranged in the line carrying groove. A nail push piece in the nail cylinder can push the nails out of the nail warehouse and make thenails shaped and fixed on a tissue to be performed with purse-string suturing. The automatic purse-string device has the main advantages that: because the nails are arranged annularly in the nail warehouse, all nails can be shaped in one plane in the process of the purse-string suturing; the automatic purse-string device has a round head, has low requirement on a surgical space range and is suitable for surgeries of high-position esophagus, low-position male pelvic cavity and the like, and can cut the tissue when suturing a purse-string, so the automatic purse-string device has extraordinarysignificance on the surgeries at special positions.

A surgical purse-string suturing instrument comprises an upper jaw, jaw handle, grip, and a lower jaw, jaw handle, grip, wherein the jaws (1) and the corresponding jaw handles (3) are arranged in shape of “L” so that the doctor is able to clearly observe the placement of the tissues on the jaws (1) directly from one side of the jaw handle (3); in order to adapt to tissues of different widths, gaps (7), peaks (8) and valleys (9), or alternately arranged teeth (10) are disposed on the surfaces of the staple cartridges (2); by employing limiting rods (11) and anti-exceeding boss (13), the exceeding of tissues during the process of purse-string suturing can be effectively prevented so that the sutured purse-string has a complete shape.

The invention relates to the technical field of medical equipment, and discloses an end effector, a surgical operating instrument, purse-string forceps and purse-string nails. The end effector and the surgical operating instrument can simplify the operation process of an operation, relieve trauma brought to a surgery patient and further make the purse-string nails connected with lumen tissue firmly. The end effector comprises a first forceps arm, a second forceps arm, a suture mechanism, a purse-string suture mechanism and a cutting mechanism, wherein the suture mechanism is arranged on one side of the longitudinal direction of the first forceps arm and the second forceps arm, the purse-string suture mechanism is arranged on the other side of the longitudinal direction of the first forceps arm and the second forceps arm and the cutting mechanism is arranged between the suture mechanism and the purse-string suture mechanism. The purse-string suture mechanism comprises a first purse-string nail box arranged on the first forceps arm and a second purse-string nail box arranged on the second forceps arm, and the purse-string nails are arranged in the first purse-string nail box and the second purse-string nail box respectively.

The invention provides an anorectal operation auxiliary device which comprises a tubular hollow body, a conical guide part placed at the far end of the hollow body, and an external expansion fixing part placed at the close end of the hollow body. At least one opening is formed in the side wall of the hollow body, and at least one suture pulling device is arranged on the inner surface of the side wall of the hollow body. Compared with traditional hemorrhoidectiomy and anastomat haemorrhoids mucosa incisione anulare anastomosis, the anorectal operation auxiliary device can be used for well conducting even purse string suture on non-annular haemorrhoids. Meanwhile, the anorectal operation auxiliary device can be effectively matched with a microscopic anastomat to quickly and effectively excise the non-annular haemorrhoids, the operation time is greatly shortened, and meanwhile the pains of a patient is greatly lightened.

The invention relates to the technical field of medical equipment, and discloses an end effector, a surgical operating instrument and purse-string forceps. The end effector and the surgical operating instrument can simplify the operation process of an operation, relieve trauma brought to a surgery patient and further make purse-string nails connected with lumen tissue firmly. The end effector comprises a first forceps arm, a second forceps arm, a suture mechanism, a purse-string suture mechanism and a cutting mechanism, wherein the suture mechanism is arranged on one side of the longitudinal direction of the first forceps arm and the second forceps arm, the purse-string suture mechanism is arranged on the other side of the longitudinal direction of the first forceps arm and the second forceps arm, and the cutting mechanism is arranged between the suture mechanism and the purse-string suture mechanism. The purse-string suture mechanism comprises a first purse-string nail box arranged on the first forceps arm and a second purse-string nail box arranged on the second forceps arm, and a purse-string nail triggering opening of the first purse-string nail box and a purse-string nail triggering opening of the second purse-string nail box are provided with closing-up structures enabling nail legs of the passing purse-string nails to be closed up.

The invention is concerned with the c, includes the lens barrel of the anoscope, the tunnel, the lens core fixer, the handle, the plug handle, the stieda body, the plug head, the characteristic is: the lens barrel of the anoscope is hollow taper that is set moveable inner covering lens in it, the convex table on the stieda body, the front of the convex table is the plug head of the coniform. The invention is fit for the PPH operation and hemorrhoids negative pressure machine. It is: uses the rake of inner plug to insert the anus easily, processes accurate operation on 1cm - 2cm of tooth traces by anoscope, processes accurate operation on 3cm - 5cm of tooth trace by inner covering lens, the purse-string suture line cannot be too deep or too fleet of mucous membrane sewing on the horizontal, in order to improve the integrality of ring cutting organic effectively.

The invention relates to the technical field of medical equipment, and discloses an end effector, a surgical operating instrument and purse-string forceps. By means of the end effector, the surgical operating instrument and the purse-string forceps, purse-string nails can be made to be connected with lumen tissue firmly, and the risk that the lumen tissue is pierced through is completely avoided; the end effector and the surgical operating instrument can further simplify the operation process of an operation and relieve trauma brought to a surgery patient. The end effector comprises a first forceps arm, a second forceps arm, a suture mechanism, a purse-string suture mechanism and a cutting mechanism, wherein the suture mechanism is arranged on one side of the longitudinal direction of the two forceps arms, the purse-string suture mechanism is arranged on the other side of the longitudinal direction of the two forceps arms and the cutting mechanism is arranged between the suture mechanism and the purse-string suture mechanism. The purse-string suture mechanism comprises a first purse-string nail box arranged on the first forceps arm, a second purse-string nail box arranged on the second forceps arm and a double-sided nail anvil located between the two purse-string nail boxes, the purse-string nails are arranged in the two purse-string nail boxes respectively, and the surfaces, facing the double-sided nail anvil, of the two purse-string nail boxes are provided with purse-string lines.

The invention relates to novel purse-string forceps for a laparoscope. The novel purse-string forceps comprise forceps clips, forceps handles, a sleeve, a fixed handle and a swing handle. The forceps handles include an upper forceps handle and a lower forceps handle, and the upper forceps handle and the lower forceps handle are fixed to the head of the sleeve by the aid of a hinge pin and can rotate relatively; the rear ends of the forceps handles and the front ends of two connecting rods form a planar four-bar expansion structure by the aid of two hinge shafts, the rear ends of the two connecting rods are connected with the front end of a draw bar by a connecting pin, the fixed handle is connected with the swing handle by a handle hinge shaft, the draw bar is arranged in the sleeve, and the tail end of the draw bar is fixedly connected with the swing handle. The novel purse-string forceps have the advantages that the novel purse-string forceps can be applied to laparoscopic surgery, the forceps clips can be fed into pneumoperitoneum of the laparoscope to be operated, and accordingly the shortcoming that apparatuses for carrying out circumferential purse-string suture on the surfaces of tissues of digestive tracts in abdominal cavities cannot be fed into pneumoperitoneum of existing laparoscopes to be operated in the prior art can be overcome.

A totally-laparoscopic circular stapler nail anvil embedding device is characterized by comprising a metal bar (1) and a nail anvil (4), wherein one end of the metal bar (1) is a connecting end (2); the other end of the metal bar (1) is a guiding end (3); the head end of the nail anvil (4) is shaped like a spherical umbrella; the other end of the nail anvil (4) is a center rod (5); the tail end of the center rod (5) is connected with a puncture head (6); and the connecting end (2) of the metal bar (1) is connected with the puncture head (6). After the adoption of a nail anvil embedding method provided by the invention, a circular stapler nail anvil can directly penetrate through the side wall of an esophagus without the need of purse string suture, so that the cutting position of the esophagus is heightened, which can guarantee the resection margin of cancer at the joint of the esophagus and a stomach and improve the effect of radical treatment of cancer. Meanwhile the method avoids the phenomenon that the wall of the esophagus crimps due to purse string tightening, the nail anvil is closer to a nail bin, the nailing is tighter, the probability of incomplete anastomosis is reduced, and thus the probability of laparoscopic esophagus-jejunum anastomotic leakage complications can be reduced remarkably.

The invention discloses a chain purse-string suture instrument, comprising staple cartridge components which are set oppositely. The staple cartridge components comprise a staple cartridge, and pushing staple plates and staples which are arranged in the staple cartridge, wherein a piece of purse string passes through ends of the staples. The chain purse-string suture instrument comprises two staple cartridge rows connected by a plurality of staple cartridge components, and a pushing block which can be driven forward. In the forward process, the pushing block can successively drive the pushing staple plates of the staple cartridge components and push the staples out of the staple cartridge. The invention has the advantages that the chain purse-string suture instrument can carry out a purse-string suture with a corresponding length according to the length of tissues; and the instrument can adapt to different tissues with different diameters.

The invention discloses a guide suture instrument for an anorectal PPH operation. The guide suture instrument comprises an open ring which is made of elastic materials and can stretch into the anal tube, rods capable of being held by human hands are arranged at the two ends of the open position of the open ring respectively, and the caliber of the open ring can be adjusted by adjusting the distance between the two rods. According to the guide suture instrument for the anorectal PPH operation, a doctor can be assisted in guaranteeing the purse string suture position and depth and the purse string completeness precision in the PPH operation process, and the situation that the operation effect is poor, and the subsidiary injury occurs due to the fact that the purse string suture position and depth are controlled improperly in the former PPH operation is effectively avoided.

The invention provides an automatic purse-string suture device comprising two clampers, wherein each clamper is movably provided with a nail storehouse; each nail storehouse is internally provided with a nail, a nail pushing piece and purse-string lines; each clamper comprises a vertical seat; the two nail storehouses are correspondingly arranged on the vertical seats and can move relative to respective vertical seats; the vertical seats of the two clampers are arranged in parallel; and one vertical seat can move relative to the other vertical seat under the action of a driving mechanism. The automatic purse-string suture device has the main advantage of capability of meeting the use in a smaller operation space, thereby enlarging a utilization range and providing convenience to doctors.