22 results about "Tissue fixing" patented technology

A tissue holder assembly includes: a base comprising a bottom member, a central hub extending upwardly from the bottom member, and a circumferential sidewall extending upwardly from the bottom member radially spaced apart from the hub, the circumferential sidewall surrounding the hub and defining an interior region configured for accommodating a cylindrical tissue holder; the base further comprising a raised platform spaced upwardly apart from the bottom member, the central hub extending through a central opening of the platform and configured for supporting the tissue holder; the bottom member, the hub, and the circumferential sidewall collectively defining an annular fluid channel underlying the platform; wherein the fluid channel extends around the hub from an opening in the platform to a fluid exit port in the circumferential sidewall; the base further comprising a flow comb underlying the platform opening and extending into the fluid channel.

The present disclosure relates to a heat-conducting needle for acupuncture in which heat conduction occurs only in the needle body area involved in the treatment during oriental medicine treatment and includes a needle body formed of a metal material with relatively high conductivity to be inserted into human tissue, a needle grip fixed to a rear end of the needle body to form a grip for procedure, and a non-conductive holding cover detachably coupled to the needle grip to cover the needle grip or covering the needle grip together with a portion of the needle grip and made of a material having relatively low conductivity.

An anchor assembly secures a tissue to a bone with a repair strand. The anchor assembly includes an anchor sleeve having a lumen and an inner thread, an anchor tip having an opening, and an anchor insert inserted into the lumen of the anchor sleeve. The anchor sleeve is inserted into a bone socket in the bone. The opening receives the repair strand. The anchor insert has an outer thread configured to engage the inner thread of the anchor sleeve, where the anchor insert rotates relative to the anchor tip while being inserted into the anchor sleeve. The anchor assembly is used in a method of securing tissue to bone.

This invention discloses a pre-placed adjustable hernia repair patch and its preparation method, relating to the field of medical device technology. The patch body is a polypropylene woven mesh with a weight of less than 50 g / m². The polypropylene woven mesh has a double-layer gradient structure with different densities on both sides. This pre-placed adjustable hernia repair patch uses a double-layer gradient structure of the same woven mesh. The outer layer has large pores (80-300 μm) to facilitate fibroblast ingrowth and tissue fixation, while the inner layer has small pores (15-80 μm) to form a physical barrier, effectively inhibiting visceral adhesions. It addresses both fixation and anti-adhesion needs. Temporary fixation is achieved through sliding PLGA fixation pins, pre-drilled holes, and elastic rings. The fixation pins are available in various lengths, and the elastic rings enable temporary fixation and position adjustment. Blue marking lines facilitate directional identification, and barium sulfate contrast markers aid in intraoperative positioning and postoperative follow-up.

This invention discloses a tissue repair system for securing a first tissue to a second tissue. The tissue repair system includes an instrument having a handle, a shaft extending distally from the handle, and a housing having a locking cap. A tissue anchor is disposed at the distal end of the shaft and is operatively coupled to an actuating member of the handle via a deployment member. The actuating member is configured to actuate the deployment member, deploying the tissue anchor and thereby coupling the tissue anchor to the first tissue. The system also includes a repair member for coupling the tissue anchor to the second tissue. The repair member has a first end operatively coupled to the tissue anchor and a second end attached to at least one coupling device. The second end of the repair member and the coupling device are housed within the instrument housing. Actuation of the actuating member is configured to unlock the housing cap.

An anchor assembly secures a tissue to a bone with a repair strand. The anchor assembly includes an anchor sleeve having a lumen and an inner thread, an anchor tip having an opening, and an anchor insert inserted into the lumen of the anchor sleeve. The anchor sleeve is inserted into a bone socket in the bone. The opening receives the repair strand. The anchor insert has an outer thread configured to engage the inner thread of the anchor sleeve, where the anchor insert rotates relative to the anchor tip while being inserted into the anchor sleeve. The anchor assembly is used in a method of securing tissue to bone.

A composition comprising a pre-polymer having a polymeric backbone comprising a polymeric unit of the formula (-A-B-)n, wherein A is derived from a substituted or unsubstituted polyol or mixture thereof and B is derived from a substituted or unsubstituted polyacid or mixture thereof, and n is an integer greater than 1, is disclosed. The composition may be used in a method of fixing to or sealing tissue, for fixing a medical device to the surface of a tissue, or for preparing a printing resin.

Surgical constructs methods of tissue fixation are disclosed. A textured structure on a bone surface provides increased friction and increased surface area for soft tissue coming down on it.

A capture-tool for manipulation of tissue utilizes vacuum to hold the tissue in place. An extension attached to a vacuum source at one end and a vacuum arm at another end creates a vacuum force through the extension and vacuum arm. The vacuum arm has a support surface with ports therein at which low pressure areas are formed by the vacuum force. The low pressure areas draw tissue against the supporting surface to hold it in place, as long as the vacuum force is active.

The present invention relates to a surgical assistance device with blood suction and tissue holding mechanisms having a ring-shaped circular structure. The structure has two extendable sections that allow the diameter to be increased or decreased. Rectangular prismatic hollow projections that do not have a front face are distributed equidistantly on the inner surface of the structure. The projections house holding clamps, the depth of which can be adjusted. The device of the present invention comprises a connector duct that is located on the surface of the outer face of the structure and runs along the inside of the structure, said duct being connected to an external suction system. Two suction pipes are positioned on the surface of the inner face of the structure, and they are inserted into the structure to connect to the connector duct. This configuration makes it possible to extract the blood that has accumulated in the area where the surgical assistance device with blood suction and tissue holding mechanisms is positioned.

Disclosed is a soft tissue engagement device. The soft tissue engagement device includes a substantially rigid elongate body extending from a first end to a second end. The elongate body is configured to be inserted at least partially within the soft tissue, transverse to a load-bearing direction of the tissue. The elongate body is further configured to engage sutures attached to underlying suture-anchors secured to a bone, thereby to draw the soft tissue onto the bone. Also disclosed is a method for attaching soft tissue to a bone.

Implants and instrumentations for fixation of tissue to bone may be provided. An expandable locking suture sleeve may provide knotless fixation of sutures and soft tissue. The locking suture sleeve may have an internal mechanism to lock extra-sleeve or tissue repair sutures through a locking loop. An insertion device may further be provided. The insertion device may have a cannulated inner wire to hold the locking sleeve sutures. The insertion device may have a driver with a receptable screw that can be advanced down the inner wire. The receptacle screw may be buried into the patient's bone to compress the suture sleeve and further lock the sutures in place. A back handle may be threaded into the screw driver in order to control the advancement of the screw.

A histologic tissue sample support device includes a tissue cassette, a frame, and a lid. The tissue cassette has a recess including at least one side wall and a bottom wall and is formed of material that can be successfully sectioned in a microtome and is resistant to degradation from solvents and chemicals used to fix, process and stain tissue. The lid is coupled to the frame and includes a platen configured to be received within the recess of the tissue cassette. The tissue cassette is movably coupled to the frame by a frame-cassette connector. The lid and the tissue cassette are capable of moving from a first position to a second position with respect to the frame, and in the second position the bottom wall and at least a portion of the side wall extend beyond a bottom edge of the frame for sectioning in a microtome.

This utility model relates to the field of biological tissue fixation technology, and discloses a device for fixing hollow organs in electron microscopy specimens. The device includes a main body, and further includes a control connection mechanism and a fixation adapter mechanism. The control connection mechanism includes an elastic pick-and-place component located at the upper end of the main body and a connection control component fixedly installed at its lower end. The fixation adapter mechanism includes a conductive support component movably located at the lower end of the connection control component and a fixation adapter component fixedly connected to its lower end. This device for fixing hollow organs in electron microscopy specimens employs a control connection mechanism and a fixation adapter mechanism, which can effectively and stably immerse hollow organ tissues in the fixative, improve the fixation effect, ensure the presentation of subcellular structures, and ensure that the device can be adapted to centrifuge tubes from different manufacturers, effectively meeting the needs of electron microscopy specimen fixation and improving the device's versatility and adaptability.

A medical device for approximating and securing tissue without requiring knots includes a lock-head, a strap section, distal protuberance, and a leader section. The device also includes a transition section between the leader and the strap section and a stiffening section proximal to the protuberance. The leader section is used to draw the strap section into the body through small apertures in tissue and the transition section provides a gradual transition in stiffness and size between the leader and the strap section.

The present disclosure provides systems and methods which facilitate the prediction of an estimated time in which one or more fluids will optimally be diffused into a biological specimen, e.g., a tissue sample derived from a human subject. In some embodiments, the present disclosure provides systems and methods which facilitate the prediction of an estimated time until a biological specimen will optimally be fixed with one or more fixatives. In other embodiments, the prediction of a future time at which the biological specimen will be optimally fixed is based on time-of-flight data acquired at a particular point in time during the fixation of the biological specimen that has been deemed sufficiently accurate to predict the time at which the biological specimen will be optimally diffused with fixative.

Surgical constructs, assemblies, kits and methods of tissue fixation are disclosed. A suture passing instrument includes a curved tip integral with a distal end of a shaft, a hand assembly mounted on a proximal end of the shaft, and a flexible strand attached to one or two needles and loaded through a cannulation of the shaft. The curve-shaped tip is adapted to engage dural tissue during repairs of the dura mater. The suture passing instrument can grasp and manipulate dura mater and can allow multiple suture passes through the dura mater without removal of the instrument from the durotomy site. The suture passing instrument is provided with a safety mechanism that prohibits the needle(s) to be fired into nerves, providing a safe, reliable, inexpensive, and speedy repair of a durotomy.

This invention is entitled "Double-row Collapsible Suture Construction". The invention provides a tissue fixation and repair construction and a repair method using the tissue fixation and repair construction. An exemplary tissue fixation and repair construction may include a first implantable anchor connected to a suture having a fixation tail and a tensioning tail. The fixation tail may include: a reverse knot positioned distally adjacent to a finger catcher such that the reverse knot substantially abuts the finger catcher when adjacent to it; a fixation stop knot configured to prevent further movement of the fixation tail through the second implantable anchor when the second implantable anchor is placed on the suture; and a finger catcher. The tensioning tail may pass through the finger catcher and the reverse knot and can be used to adjust the tension of the tissue fixation and repair construction when the first and second implantable anchors are inserted into the bone.

This application relates to the field of medical devices, and more particularly to a drive locking device for a tissue fixation system. The tissue fixation system includes a fixation clamp and a delivery device, the delivery device being connected to the fixation clamp. The fixation clamp includes a main body, a clamping arm, and a locking device. The clamping arm is connected to the main body via a hinge structure, and the locking device is connected to the main body. The clamping arm includes a clamping part for clamping tissue and an opening / closing control part. The opening / closing control part includes a first control arm and a second control arm. When the locking device abuts against at least two of the first control arms and moves along a first direction, the locking device drives the clamping arm to open. When the locking device abuts against at least two of the second control arms and moves along a second direction, the locking device drives the clamping arm to gradually close to a locked state. In this invention, the switching between the open and closed states of the fixation clamp can be achieved using only the locking device, without the need for additional components, greatly simplifying the structural design and operation steps of the device.

This invention belongs to the field of experimental equipment technology and relates to a detachable electric rotating tissue fixation and decalcification rinsing device, including an experimental bucket, a storage box, a rotating shaft, multiple processing chambers, and a rotating assembly. This invention simplifies the operation process; water is stored in the storage box when rinsing tissue samples, and the water flows into each processing chamber to rinse the tissue samples, avoiding frequent opening and closing of the caps. Simultaneously, the rotating shaft drives the multiple processing chambers to rotate reciprocally, ensuring that the water flow is evenly distributed in each chamber, preventing over- or under-rinsing of the tissue samples and guaranteeing the accuracy of subsequent experimental results. Furthermore, by designing each processing chamber as multiple sample cavities from top to bottom, multiple tissue samples can be processed at once, and the water flow is evenly distributed in each sample cavity, resulting in more thorough tissue fixation and decalcification, and reducing the experimental cycle.