34 results about "Veress needle" patented technology

A medical device including a portion similar to a Veress needle, useful for relief of tension pneumothorax. The device includes a hollow tubular stylet disposed movably within a hollow needle or cutting cannula, and an optionally releasable locking mechanism for keeping the stylet in place protruding distally beyond the sharpened distal end of the cutting cannula to prevent puncture of internal organs after the chest wall has been intentionally punctured. The stylet can also be moved outward from within the cannula to push a plug of tissue from the bore of the cannula. A valve or a connector for a tube may be provided at a proximal end of the stylet.

A laparoscopic instrument for forming an incision in a body cavity, insufflating the body cavity with gas, and suturing the incision at the completion of the surgery includes a set of jaws at the distal end of the Veress needle or cannula. The jaws are pivoted to one another for motion between an open position or a closed position in which they may be used to grasp a suture in the body cavity for removal from the cavity for knotting. A push mechanism at the proximal end of the instrument moves the jaws between their open and closed position on successive actuations of a pushbutton and retains them in that state until the next push. An illumination source is provided for the distal end of the instrument to provide illumination through the walls of the body cavity so that the surgeon can determine the degree of penetration of the instrument into the body cavity and can identify any major arteries which should be avoided in the formation of other laparoscopic openings.

A Veress needle is modified to receive a forward-looking miniature videoscope through the cannula of an insufflation tube of the Veress needle. The modified instrument enables direct viewing of progress of the instrument through tissue to the peritoneal cavity of a patient, for proper location of the needle and insufflation of the cavity via the needle. The videoscope has an elongated shaft of smaller diameter than the cannula of the insufflation tube for passage of insufflation gas with the scope in place. In another embodiment a needle is fitted with a miniature videoscope to provide the same function, with the needle's cannula serving as an insufflation tube.

A veress needle including a housing, a first optical insert for contact viewing, and a second optical insert for distance viewing. The housing including one or more insufflation conduits and an elongate member. The one or more insufflation conduits being adapted to permit the passage and reception of at least one fluid therethrough. The housing defines a passage therethrough. The first and second optical inserts are operably associated with the housing and removably positionable within the passage of the housing while the elongate member remains positioned within tissue. Each optical insert includes an optical assembly having one or more lenses and an ocular. The one or more lenses are adapted to receive an image and transmit the image to the ocular so that the image is perceptible through the ocular.

A Veress needle assembly comprises an outer steel tube with a sharpened tip at the distal end surrounding an inner rod having a blunt distal end. The proximal end of the inner rod is spring biased towards a position in which its distal end extends beyond the distal end of the outer stainless steel tube so that while piercing the wall of a body cavity the inner rod is forced upwardly against the spring bias to allow the sharpened end of the outer tube to extend into a cutting position. An indicator light supported on the proximal end of the assembly is controlled by a switch which is in a first position when the outer tube is passing through the wall of the body cavity and a second position when the outer tube enters the body cavity behind the wall, allowing the rod to move beyond the distal end of the outer tube, thereby changing the illumination of the light source so that the operator is signaled that the Veress needle has passed into the body cavity.

A single step body insertion device comprises a cannula and a Veress needle which penetrates the skin surface and relevant tissue layers to reach fluid and / or gases that need to be removed from the body. The cannula shaft and tapered tip are of a polymeric material which is flexible and kink resistant. The Veress needle has an engagement feature for engagement with the tapered tip of the cannula for delivery of the cannula into the body as the Veress needle is inserted into the body. The device is used for the management of conditions such as pneumothoraxes and pleural effusions as well as other conditions that require release of fluid and / or gas from the body.

A Veress needle includes an outer needle having a shaft and a sharp distal point. The sharp distal point and a distal portion of the shaft are configured to penetrate tissue. A spring-loaded, inner cannula is disposed in the outer needle. The cannula has a dull tip and a gas exit aperture is formed near a distal end of the cannula. The outer needle has an outwardly expandable portion located on the distal portion of the shaft.

A laparoscopic instrument for forming an incision in a body cavity, insufflating the body cavity with gas, and suturing the incision at the completion of the surgery includes a set of jaws at the distal end of the Veress needle or cannula. The jaws are pivoted to one another for motion between an open position or a closed position in which they may be used to grasp a suture in the body cavity for removal from the cavity for knotting. A push mechanism at the proximal end of the instrument moves the jaws between their open and closed position on successive actuations of a pushbutton and retains them in that state until the next push. An illumination source is provided for the distal end of the instrument to provide illumination through the walls of the body cavity so that the surgeon can determine the degree of penetration of the instrument into the body cavity and can identify any major arteries which should be avoided in the formation of other laparoscopic openings.

The invention discloses a laparoscopic varicocele ligation puncture device. Such structure design that a fixing mechanism and an anti-disengagement mechanism is adopted, the expansion stretch-out and draw-back principle of an elastic air bag and the adsorption principle of a carbon nano tube array are made use of, a conical head can be effectively prevented from being disengaged from a puncture part, a main sheath tube thus does not move in the human body or outside the human body in the operation process, the operability is largely improved, meanwhile an air guide hole is formed in the conical head, the air inflation effect of a veress needle can be achieved, and the safe use function requirements of puncture and pneumoperitoneum are met.

A laparoscopic instrument for forming an incision in a body cavity, insufflating the body cavity with gas, and suturing the incision at the completion of the surgery includes a set of jaws at the distal end of the Veress needle or cannula. The jaws are pivoted to one another for motion between an open position or a closed position in which they may be used to grasp a suture in the body cavity for removal from the cavity for knotting. A push mechanism at the proximal end of the instrument moves the jaws between their open and closed position on successive actuations of a pushbutton and retains them in that state until the next push. An illumination source is provided for the distal end of the instrument to provide illumination through the walls of the body cavity so that the surgeon can determine the degree of penetration of the instrument into the body cavity and can identify any major arteries which should be avoided in the formation of other laparoscopic openings.

A puncture assistance device for use in connection with an ultrasound probe to guide a Veress needle through the layers of the wall into a bodily cavity is provided. The puncture assistance device comprises a tenaculum-like forceps, a needle guide body provided with a slot for guiding the Veress needle within the scan plane of the ultrasound probe, attachment means to the ultrasound probe, and attachment means of the needle guide to the tenaculum-like forceps. Also provided is a balloon catheter for use as a retractor in gaining access into the abdominal cavity, presenting at its distal end an inflatable balloon membrane and an framework of non-distendable flexible fibers disposed in a specific arrangement. A method access the abdominal cavity with the aid of said devices under ultrasound guidance is also provided.

A single step body insertion device comprises a cannula and a Veress needle which penetrates the skin surface and relevant tissue layers to reach fluid and / or gases that need to be removed from the body. The cannula shaft and tapered tip are of a polymeric material which is flexible and kink resistant. The Veress needle has an engagement feature for engagement with the tapered tip of the cannula for delivery of the cannula into the body as the Veress needle is inserted into the body. The device is used for the management of conditions such as pneumothoraxes and pleural effusions as well as other conditions that require release of fluid and / or gas from the body.

The invention discloses a puncture cannula used for laparoscopic operation and capable of preventing abdominal viscus puncture injury. The puncture cannula comprises a veress needle, a cutting puncture blade, a puncture pipe core, a puncture outer cannula, an integrated holding lug and a pipe core base, the veress needle, the puncture blade, the puncture pipe core and the puncture outer cannula are sequentially arranged from inside to outside, the veress needle comprises a veress puncture needle head, a puncture handle, a gas port valve and a gas port, the gas port valve and the veress puncture needle head are mounted vertically, the gas port and the veress puncture needle head are mounted vertically, a semicircular pipe core head is arranged at the top end of the puncture pipe core, the cutting puncture blade is arranged in the semicircular pipe core head, the other end of the puncture pipe core is connected with the pipe core base through a spring, the integrated holding lug is arranged between the puncture pipe core and the pipe core base, and an outer cannula antiskid thread is arranged on the puncture outer cannula. By the puncture cannula, puncture injury is reduced, protection of viscera of a patient during operation is facilitated, operating safety coefficient is increased, and leakage during operation is reduced.

A laparoscopic instrument for forming an incision in a body cavity, insufflating the body cavity with gas, and suturing the incision at the completion of the surgery includes a set of jaws at the distal end of the Veress needle or cannula. The jaws are pivoted to one another for motion between an open position or a closed position in which they may be used to grasp a suture in the body cavity for removal from the cavity for knotting. A push mechanism at the proximal end of the instrument moves the jaws between their open and closed position on successive actuations of a pushbutton and retains them in that state until the next push. An illumination source is provided for the distal end of the instrument to provide illumination through the walls of the body cavity so that the surgeon can determine the degree of penetration of the instrument into the body cavity and can identify any major arteries which should be avoided in the formation of other laparoscopic openings.

A Veress needle is modified to receive a forward-looking miniature videoscope through the cannula of an insufflation tube of the Veress needle. The modified instrument enables direct viewing of progress of the instrument through tissue to the peritoneal cavity of a patient, for proper location of the needle and insufflation of the cavity via the needle. The videoscope has an elongated shaft of smaller diameter than the cannula of the insufflation tube for passage of insufflation gas with the scope in place. In another embodiment a needle is fitted with a miniature videoscope to provide the same function, with the needle's cannula serving as an insufflation tube.

A surgical device that provides a suction force against a patient's body. The device includes a handle and a suction head pivotally attached to the handle. The suction head includes an open-ended suction chamber having a rim positioned to engage the patient's skin. An actuator on the handle operates a pump to draw a negative pressure in the suction chamber, causing the rim to seal against the patient's skin via the suction force. Once the suction force is initiated, the user may lift the handle away from the patient's body to lift tissue. The lifted tissue provides a site for insertion of a trocar or Veress needle for a laparoscopic procedure in some embodiments. A gimbal disposed between the handle and the suction head provides at least two degrees of freedom such that the handle can be rotated and pivoted to optimize the direction of applied lifting force.

A medical device including a portion similar to a Veress needle, useful for relief of tension pneumothorax. The device includes a hollow tubular stylet disposed movably within a hollow needle or cutting cannula, and an optionally releasable locking mechanism for keeping the stylet in place protruding distally beyond the sharpened distal end of the cutting cannula to prevent puncture of internal organs after the chest wall has been intentionally punctured. The stylet can also be moved outward from within the cannula to push a plug of tissue from the bore of the cannula. A valve or a connector for a tube may be provided at a proximal end of the stylet.

A bendable veress needle is disclosed that has a shaft with a bendable region located near its distal end. The distal end of the bendable region includes a tissue penetrating tip. A stylet may be inserted through the bendable veress needle. A housing having an insufflation port is located at a proximal end of the bendable veress needle. A light source or imaging system may be coupled to the bendable veress needle.

The invention belongs to the field of medical devices, and in particular relates to a collection and processing device for veress needles for female examination. Aiming at the problem that after current veress needles are used, centralized collection and disinfection are required, but a current collection manner still relies on manual collection, and the operation method is not only inefficient, but also has certain risk factors, the invention proposes the following scheme: the device includes a bottom plate, a fixed seat is fixed on one side of the top of the bottom plate, and a placement groove is arranged in the top of the fixed seat; and the fixed seat is provided with a moving hole, the moving hole communicates with the placement groove, and the inner wall of the moving hole is slidingly connected with a placement plate. According to the device, a rotating motor and a driving motor are started respectively to conveniently clamp the veress needles on a plurality of plastic clamp plates, so that when the veress needles are collected, manual operation can be reduced, the contact between the veress needle and a human body can be effectively reduced, the storage work efficiency isincreased, and risk factors can be greatly reduced.

A Veress needle provided with an insertion member (130) for guarding a needle tip (112) to avoid a damage on an organ located inside of a perforated site (192) in a case where the needle perforates a wall portion (190) in a living organism, wherein a means (105) for preventing falling off, said means having a shape curved due to elastic deformation thereof, is provided so that, after the completion of the perforation, the tip section (134) of the insertion member (130) projects from a lumen (118) to thereby prevent the falling off of the needle tip (112) from the perforated site (192).

A puncture assistance device for use in connection with an ultrasound probe to guide a Veress needle through the layers of the wall into a bodily cavity is provided. The puncture assistance device comprises a tenaculum-like forceps, a needle guide body provided with a slot for guiding the Veress needle within the scan plane of the ultrasound probe, attachment means to the ultrasound probe, and attachment means of the needle guide to the tenaculum-like forceps. Also provided is a balloon catheter for use as a retractor in gaining access into the abdominal cavity, presenting at its distal end an inflatable balloon membrane and an framework of non-distendable flexible fibers disposed in a specific arrangement. A method access the abdominal cavity with the aid of said devices under ultrasound guidance is also provided.

The invention relates to a veress needle, in particular to a safety type veress needle capable of realizing self-locking, and belongs to the technical field of veress needles. The abdominal wall can be punctured by an outer puncture tube, and the abdominal wall can be inflated by an inner inflation tube after puncture, and interlocking of the inner puncture tube and the inner inflation tube can berealized through cooperation of an inner tube locking block and an outer tube locking groove on an elastic connecting piece; when the inner tube locking block is withdrawn from the outer tube lockinggroove, the locked state of the inner inflation tube and the outer puncture tube can be relieved; when the locking is relieved, the abdominal wall can be punctured, and an inner tube elastomer can beused to drive the inner inflation tube to move the abdominal wall is punctured, when a blunt head is located in front of the puncture tip, injury of the puncture tip to organs or tissues in the abdominal cavity can be avoided, and the veress needle is convenient to use, safe and reliable.

A surgical device that provides a suction force against a patient's body. The device includes a handle and a suction head pivotally attached to the handle. The suction head includes an open-ended suction chamber having a rim positioned to engage the patient's skin. An actuator on the handle operates a pump to draw a negative pressure in the suction chamber, causing the rim to seal against the patient's skin via the suction force. Once the suction force is initiated, the user may lift the handle away from the patient's body to lift tissue. The lifted tissue provides a site for insertion of a trocar or Veress needle for a laparoscopic procedure in some embodiments. A gimbal disposed between the handle and the suction head provides at least two degrees of freedom such that the handle can be rotated and pivoted to optimize the direction of applied lifting force.

The present invention provides a lamprey lock device configured to provide a fluid transfer between two devices or objects. In one embodiment, lamprey lock device of the present invention improves fluid transfer by maximizing the inner diameter of connections between two objects including but not limited to a catheter, tubing, veress needles, trocars, syringes, or gas / fluid delivery systems.

The invention discloses a veress needle which sequentially comprises an outer needle, an inner needle, handle, an air valve, an indicating block and a spring from a far end to a near end, wherein theouter needle is provided with an acute needle head, the inner needle is provided with an obtuse needle head, and the indicating block is mounted in the handle. The outer needle, the inner needle, thehandle and the air valve form a hollow channel, the hollow channel can contain and pass gas or liquid, the handle comprises a first indicating area and a second indicating area, the indicating block is limited between the first indicating area and the second indicating area to radially move under the action of the spring along with a fact that the obtuse needle head of the inner needle extends outof or contracts from the acute needle head of the outer needle, the first indicating area and the second indicating area include transparent amplification areas, and the indicating block is displayedas amplified virtual images in the amplification areas.

The invention belongs to the technical field of smoke exhaust devices, particularly relates to a laparoscopic surgery smoke exhaust device and aims at solving the problem that a Veress needle is utilized for air extraction, enterocoelia can contract at the same time although smoke in the enterocoelia is thoroughly exhausted, and an operation space for a surgery is destroyed of an existing manner of removing surgical smoke. Now the following technical scheme is provided, the laparoscopic surgery smoke exhaust device comprises a lying plate; a connecting plate is fixedly installed on the top ofthe lying plate; a fixed plate is fixedly installed on one side of the connecting plate and is provided with a fixed cavity; fixed grooves are formed in the inner wall of the top and the inner wall ofthe bottom of the fixed cavity respectively; one fixed rod is fixedly installed on the inner walls of the two sides of each fixed groove; the two fixed rods are provided with one sliding plate in a sliding manner; one ends of springs are fixedly installed on one side of the sliding plate; and the other ends of the springs are fixedly installed on the inner walls of one sides of the fixed groovesrespectively. The laparoscopic surgery smoke exhaust device is simple in structure and convenient to use and can facilitate the situations that the smoke in a belly of a patient is exhausted, and airpressure in the belly can be kept constant.

The invention discloses a disposable veress needle manufacturing method which comprises the following steps: 1) arranging a grip; 2) arranging a stylet; 3) arranging a puncture needle; 4) arranging a protector; and 5) arranging an acousto-optic warning device. The invention also discloses a veress needle manufactured by the disposable veress needle manufacturing method. The method disclosed by the invention is simple and easy to implement, and is low in cost. The veress needle disclosed by the invention has ingenious structural design: when the key is not pressed down, the protector starts the protection function to effectively protect the point of the puncture needle by utilizing a protection part on the stylet; in the puncture process, the protector stops protection, the acousto-optic warning device starts induction to correspondingly drive a buzzer and an LED (light-emitting diode) lamp, thereby warning the operator to concentrate; and after the pneumoperitoneum is punctured, the protector recovers the protection function to prevent the needle from accidentally injuring the internal organs, and meanwhile, the acousto-optic warning device is automatically shut down, thereby greatly enhancing the safety and effectiveness of the puncture surgery. The veress needle is simple to operate; and the veress needle is disposable, thereby avoiding cross infection and having high safety.

The invention discloses an airbag indicating and locating pneumoperitoneum needle. The airbag indicating and locating pneumoperitoneum needle comprises an outer needle, an inner core and a needle sheath for fixing the outer needle, an opening is formed in the rear end of the needle sheath, the rear end is provided with an elastic airbag, a rotary valve is arranged between the opening and cavity of the needle sheath, the needle sheath is communicated with the cavity through the rotary valve, the rotary valve comprises a barrel body integrated with the needle sheath and a valve body firmly matched in the barrel body, a rotating handle is arranged at one end of the valve body, the other end extends out of the barrel body to form a joint, the valve body is provided with a first passage and a second passage corresponding to the opening of the needle sheath, wherein one end of the second passage is opened, and the opening at the other end of the joint is communicated with the cavity to form the second passage when the first passage is closed. The airbag indicating and locating pneumoperitoneum needle is improved based on an existing pneumoperitoneum needle, the carbon dioxide feeding mode is changed, and the existing method for detecting whether the pneumoperitoneum needle enters the abdominal cavity is changed. By means of the airbag indicating and locating pneumoperitoneum needle, an operator does not need to prepare an injector for injecting normal saline and only needs to use air. The improved rotary valve is convenient for communicating with carbon dioxide, and the valve is very convenient to switch.

A Veress needle having a penetration member (130) that protects a needle tip (112) in order to avoid damage to an organ located inside a puncture site (192) when puncturing a wall portion (190) in a living body. The abdominal needle is provided with a fall-off prevention mechanism (105). The fall-off prevention mechanism (105) has an elasticity-based function by causing the front end portion (134) of the insertion member (130) to protrude from the inner cavity (118) after the puncture is completed. A deformed curved shape so that the needle tip (112) does not fall off from the puncture site (192).