54 results about "Prostatic urethra" patented technology

Systems, devices, and methods are provided for retrieval of an implant from the prostatic urethra. Embodiments of retrieval systems can include a device for insertion into the patient and a proximal control device for use in grasping a portion of the implant and withdrawing the implant into a lumen of the retrieval system.

An implant is for the prostatic urethra of a subject, the implant including a first frame being closed-shaped, the first frame includes two longitudinal sections; a second frame being closed-shaped, the second frame includes two longitudinal sections, wherein a mid-portion of one of the longitudinal sections of the first frame is connected in at least one of: directly and indirectly, to a mid-portion of one of the longitudinal sections of the second frame; and a third frame being distinct from the first frame and the second frame, the third frame includes a first arm section joined to the first frame, and a second arm section joined to the second frame, the first arm section and the second arm section extend such to be joined together in an apex portion.

Systems, devices, and methods are provided for the delivery of an implant into the prostatic urethra. Embodiments of delivery systems can include a delivery device for insertion into the patient and a proximal control device for use in controlling release of the implant from the delivery device.

A stent is disclosed that is configured to maintain patency of the prostatic urethra despite an enlarged prostate. The stent can include a handle that, in an undeflected position, is disposed outside of the flow path of the stent. When the handle is pulled, the handle can deflect to generally aligned with a central axis of the stent. A capture device is disclosed that includes a tapered tip to navigate a working channel of a delivery device and a hook that can capture the stent handle and be moved into a tube to retain the stent handle to facilitate maneuvering of the stent in and out of the working channel of the delivery device. A loading adapter with a tapered port is disclosed that can be disposed on the delivery device to distribute compressive forces applied by the port on the stent during loading into the working channel.

It is an object of the disclosed technique to provide methods and systems for a prostatic urethra implant for treating prostate enlargement when both the lateral lobes and the median lobe enlarge

An implantable biocompatible expander suitable for implantation into a urinary duct, comprises an elongated sinusoidal ring comprising at least two proximal prongs and at least two distal prongs, wherein the expander is resiliently deformable from a relaxed radially expanded orientation to a radially contracted orientation suitable for transluminal delivery through the urinary duct. The expander is configured to exert an outward radial force against a wall of the urinary duct when in-situ within the urinary duct. In particular, the expander is suitable for treatment of benign prostatic hyperplasia and configured for implantation into the prostatic urethra between, and substantially spanning the prostatic urethra between, the bladder neck and external sphincter.

Aspects of the present invention relate to a method for locating an expandable implant for treating BPH within the prostatic urethra of a patient. The delivery device comprises an inner tube and an outer sleeve moveable relative to the inner tube between a stored position and a deployed position. The outer sleeve surrounds the inner tube to define an annulus therebetween and the expandable implant is retained within the annulus when the outer sleeve is in the stored position.

Systems, devices, and methods are provided for the delivery of an implant into the prostatic urethra. Embodiments of delivery systems can include a delivery device for insertion into the patient and a proximal control device for use in controlling release of the implant from the delivery device.

The application discloses a high-compliance temporary prostatic urethral stent with a cordless recovery system and belongs to the field of medical devices, which comprises a stent, a connecting sleeve is arranged on the stent, a guide wire is detachably arranged on the connecting sleeve, and a connecting line is arranged in the guide wire; a storage fixing sleeve is arranged on the outer side of the stent, the stent is stored in the storage fixing sleeve in an initial state; and a recovery system is further included, and the stent and the mechanical structure of the recovery system form a releasable locking cooperation in a recovery stage. The cordless magnetic recovery system is adopted to eradicate the pain and the risk of retrograde infection caused by the indwelling suture line; the magnetic-attraction mechanical double locking cooperation self-adaptive multi-claw probe realizes accurate capture under blind vision; the asymmetric cross-section wire is adopted for the stent body to improve the circumferential flexibility while providing sufficient radial support; and the flexible connecting anchor leaf can be self-adaptive to the asymmetric bladder neck dissection, can disperse stress and can avoid tissue stimulation and damage.

A delivery device for positioning an implantable expander to a target location in a prostatic urethra. An implantable biocompatible expander suitable for implantation into a urinary duct is resiliently deformable from a relaxed radially expanded orientation to a radially contracted orientation suitable for transluminal delivery through the urinary duct. The expander may be configured to exert an outward radial force against a wall of the urinary duct when in-situ within the urinary duct. In particular, the expander is suitable for treatment of benign prostatic hyperplasia and configured for implantation into the prostatic urethra between, and substantially spanning the prostatic urethra between, the bladder neck and external sphincter.

An implantable biocompatible dilator (1) suitable for implantation in a urinary tract includes: an elongated sinusoidal ring having at least two proximal forks (7) and at least two distal forks (5), wherein the dilator can elastically deform from a relaxed radial expansion orientation to a radial contraction orientation, the radial contraction orientation being suitable for transluminal delivery through the urinary tract. The dilator is configured to apply radially outward forces to the urinary tract wall when in situ within the urinary tract. In particular, the dilator is suitable for treating benign prostatic hyperplasia and can be configured to be implanted and substantially cross the prostatic urethra between the bladder neck and the external sphincter.

Systems, devices, and methods are provided for the delivery of an implant into the prostatic urethra. Embodiments of delivery systems can include a delivery device for insertion into the patient and a proximal control device for use in controlling release of the implant from the delivery device.

Aspects of the present invention relate to a delivery device for locating an expandable implant for treating BPH within the prostatic urethra of a patient. The delivery device comprises an inner tube and an outer sleeve movable relative to the inner tube between a stored position and a deployed position. The outer sleeve surrounds the inner tube to define an annulus therebetween and the expandable implant is retained within the annulus when the outer sleeve is in the stored position.

A catheter for deploying an implantable expander in a urethra. An implantable biocompatible expander suitable for implantation into a urinary duct is resiliently deformable from a relaxed radially expanded orientation to a radially contracted orientation suitable for transluminal delivery through the urinary duct. The expander may be configured to exert an outward radial force against a wall of the urinary duct when in-situ within the urinary duct. In particular, the expander is suitable for treatment of benign prostatic hyperplasia and configured for implantation into the prostatic urethra between, and substantially spanning the prostatic urethra between, the bladder neck and external sphincter.

Some embodiments of the invention advantageously leverage the expansion of the prostatic urethra using adjustable lumen tension rings (ALTRs) of desired sizes to control and improve flow throughout the range of the urethra. As such, some embodiments include tension ring(s) or cylinders that sits either inside or outside the prostatic wall and is at least partially within the lumen and / or is partially or fully anchored, attached, adhered, or otherwise held in place with respect to the bladder or other locations within the urethra and / or elsewhere in the urethra. The expansion of the lumen can be pre-configured based on pre-operative metrology of the prostatic urethra to a customized and adjustable fit across the various zones within the urethra and based on the patient specific and evolving needs.

The utility model discloses an in-vitro prostate pathological tissue positioning identification and sampling device, which relates to the technical field of medical instruments and comprises a support component, a positioning guide component and a plurality of positioning needles. The support assembly comprises a supporting plate and a positioning column, and the positioning column is used for penetrating through the urethra of the prostate to fix the prostate; the positioning and guiding assembly is installed on the support assembly, and scales used for positioning the tumor position in the prostate body are arranged on the positioning and guiding assembly; and the plurality of positioning needles are used for positioning and identifying focuses in the prostate body. Through the arrangement, the preoperative mpMRI image of a patient and a 3D reconstructed digital model can be used as input, and the position of a tumor in a gland can be accurately positioned again under the condition that the prostate tissue is in vitro through the assistance of the in-vitro prostate pathological tissue positioning identifier and the sampling device; therefore, the target tumor tissue can be quickly and accurately taken out from the in-vitro prostate.

The invention relates to a prostate urethra auxiliary stripping device which comprises a handle, a handle fixedly arranged on the handle, a stripping mechanism arranged at the other end of the handle and a control switch arranged on the handle and used for controlling the stripping mechanism. The stripping mechanism comprises a shovel main body movably arranged on the handle, a left shovel telescopically arranged in the shovel main body, a right shovel telescopically arranged in the shovel main body, a reset assembly arranged in the shovel main body and used for driving the left shovel and the right shovel to stretch out and draw back, and a reciprocating assembly arranged on the handle and used for driving the shovel main body to move; the front stripping blade is arranged at the front end of the shovel main body, the left stripping blade is arranged at one end of the left shovel, and the right stripping blade is arranged at one end of the right shovel. According to the auxiliary stripping device, multi-angle and multi-direction stripping operation can be completed, the number of times that an instrument enters and exits a body cavity is reduced, the risk that surrounding tissue is accidentally injured, and bleeding or infection is caused is objectively reduced, and the convenience and safety of an operation are improved.

This patent document discloses devices, systems, and associated methods for cutting, manipulating, and stabilizing tissue. A system for manipulating tissue in a prostatic urethra includes a handle body having a deployment actuator or a cutter actuator, along with an inflation port. An elongate member is coupled to a distal end of the handle body, and an expandable member is coupled to a distal end of the elongate member, which also includes a delivery body or a cutter body. The expandable member is configured to stabilize the delivery body or the cutter body against target tissue when the expandable member is expanded. A tissue manipulation structure, such as a cutter, is configured to move from a first position to a second position in which at least a portion of the structure extends into the surrounding prostatic tissue.

A stent is disclosed that is configured to maintain patency of the prostatic urethra despite an enlarged prostate. The stent can include a handle that, in an undeflected position, is disposed outside of the flow path of the stent. When the handle is pulled, the handle can deflect to generally aligned with a central axis of the stent. A capture device is disclosed that includes a tapered tip to navigate a working channel of a delivery device and a hook that can capture the stent handle and be moved into a tube to retain the stent handle to facilitate maneuvering of the stent in and out of the working channel of the delivery device. A loading adapter with a tapered port is disclosed that can be disposed on the delivery device to distribute compressive forces applied by the port on the stent during loading into the working channel.

A catheter for deploying an implantable expander to a target location in a urethra. An implantable biocompatible expander suitable for implantation into a urinary duct is resiliently deformable from a relaxed radially expanded orientation to a radially contracted orientation suitable for transluminal delivery through the urinary duct. The expander may be configured to exert an outward radial force against a wall of the urinary duct when in-situ within the urinary duct. In particular, the expander is suitable for treatment of benign prostatic hyperplasia and configured for implantation into the prostatic urethra between, and substantially spanning the prostatic urethra between, the bladder neck and external sphincter.

Systems, devices, and methods are provided for the delivery of an implant into the prostatic urethra. Embodiments of delivery systems can include a delivery device for insertion into the patient and a proximal control device for use in controlling release of the implant from the delivery device.

A prostatic implant configured to compress an enlarged prostate gland includes a distal anchor member and an expandable, proximal anchor member connected by a middle portion. The expandable, proximal anchor member is configured to expand upon being released from a tubular delivery device, such that the anchoring footprint of the expandable anchor member on the urethral side of a prostate gland is large relative to anchors having fixed dimensions. The expandable anchor member includes expandable portions configured to expand outwardly or laterally away from the body of the expandable anchor member, forming curved portions or wings. After anchoring the distal anchor member to the outer surface of the prostatic capsule, tension may be applied to the middle portion extended through the prostate gland. Attachment of the expandable anchor member to the middle portion at the urethral side of the gland locks the tension in place, retracting the enlarged prostatic tissue.

Systems, devices, and methods are provided for the delivery of an implant into the prostatic urethra. Embodiments of delivery systems can include a delivery device for insertion into the patient and a proximal control device for use in controlling release of the implant from the delivery device.

Systems, apparatus, and methods for delivering an implant into the prostatic urethra are provided. Embodiments of the delivery system may include a delivery device for insertion into a patient and a proximal control device for controlling the release of the implant from the delivery device.

A delivery device for image-assisted delivery of an implantable expander in a urethra. An implantable biocompatible expander suitable for implantation into a urinary duct is resiliently deformable from a relaxed radially expanded orientation to a radially contracted orientation suitable for transluminal delivery through the urinary duct. The expander may be configured to exert an outward radial force against a wall of the urinary duct when in-situ within the urinary duct. In particular, the expander is suitable for treatment of benign prostatic hyperplasia and configured for implantation into the prostatic urethra between, and substantially spanning the prostatic urethra between, the bladder neck and external sphincter.

Disclosed herein is a benign prostatic hyperplasia treatment device. The benign prostatic hyperplasia treatment device includes: anchor assemblies including a first anchor arranged at the outer surface of the prostate gland, which obstructs the prostatic urethra, a second anchor arranged inside the prostate gland to be opposed to the first anchor, and a ligature connecting the first anchor and the second anchor with each other so that the second anchor compresses the prostate tissue to secure the opening of the prostatic urethra; and a sheath inserted into the urethra and having a needle, which guides the anchor assembly to be deployed at the prostate gland.

A prostatic implant configured to compress an enlarged prostate gland includes a distal anchor member and an expandable, proximal anchor member connected by a middle portion. The expandable, proximal anchor member is configured to expand upon being released from a tubular delivery device, such that the anchoring footprint of the expandable anchor member on the urethral side of a prostate gland is large relative to anchors having fixed dimensions. The expandable anchor member includes expandable portions configured to expand outwardly or laterally away from the body of the expandable anchor member, forming curved portions or wings. After anchoring the distal anchor member to the outer surface of the prostatic capsule, tension may be applied to the middle portion extended through the prostate gland. Attachment of the expandable anchor member to the middle portion at the urethral side of the gland locks the tension in place, retracting the enlarged prostatic tissue.

A delivery tube for image-assisted positioning an implantable expander in a prostatic urethra. An implantable biocompatible expander suitable for implantation into a urinary duct is resiliently deformable from a relaxed radially expanded orientation to a radially contracted orientation suitable for transluminal delivery through the urinary duct. The expander may be configured to exert an outward radial force against a wall of the urinary duct when in-situ within the urinary duct. In particular, the expander is suitable for treatment of benign prostatic hyperplasia and configured for implantation into the prostatic urethra between, and substantially spanning the prostatic urethra between, the bladder neck and external sphincter.

The present invention provides a urethral indwelling device that can be stably placed in a predetermined position within the urethra due to its simple structure. [Solution] The urethral indwelling device 1, which is placed inside the urethra, comprises a prostatic loop portion 10 located at the tip and placed in the prostatic urethra, a bulbous urethral loop portion 20 located at the proximal end and placed in the bulbous urethra, and a loop connecting linear portion 30 that connects the prostatic loop portion 10 and the bulbous urethral loop portion 20. The prostatic loop portion 10, the bulbous urethral loop portion 20, and the loop connecting linear portion 30 are composed of a superelastic alloy wire 5 and a flexible covering tube 6 that covers the superelastic alloy wire 5.

Aspects of the present invention relate to a delivery device for locating an expandable implant for treating BPH within the prostatic urethra of a patient. The delivery device comprises an inner tube and an outer sleeve movable relative to the inner tube between a stored position and a deployed position. The outer sleeve surrounds the inner tube to define an annulus therebetween and the expandable implant is retained within the annulus when the outer sleeve is in the stored position.