CN-114053557-B - Detachable needle and dilator catheter placement apparatus and related methods

Abstract

Disclosed herein is a catheter placement system including a detachable needle and a dilator. The system may include a housing having one or more flexible sections and having a pleated section. The user may grasp the elongate medical device using the flexible section and transition the pleated section of the housing between the extended and collapsed configurations to push the elongate medical device proximally or distally. The system may further include a needle retraction mechanism configured to split the needle along the longitudinal axis and roll up the separated portions to allow one or more elongate medical devices to pass therebetween. The system may also include a dilator detacher configured to separate the dilators along the longitudinal axis and radially displace the dilator portions to allow one or more elongate medical devices to pass therebetween. Advantageously, the system can maintain the elongate medical device in a sterile environment, mitigating the introduction of pathogens.

Inventors

• G.H. HOWELL
• K. G. thornley
• Z. S. Hastings
• K. Diazza begunawadna
• J. B. Taylor
• T. C. Tobin
• J. N. Phelps
• D. HAMILTON

Assignees

• 巴德阿克塞斯系统股份有限公司

Dates

Publication Date

20260512

Application Date

20210802

Priority Date

20200803

Claims (14)

1. 1. A catheter placement system for placement of an elongate medical device into a vasculature of a patient, the catheter placement system comprising: A catheter housing defining a longitudinal axis; A catheter disposed within an interior cavity of the catheter housing, the catheter housing surrounding a portion of the catheter about the longitudinal axis, and A needle housing, a proximal end of the needle housing releasably coupled to a distal end of the catheter housing to allow separation of the needle housing from the catheter housing, the needle housing comprising: a needle having a beveled tip, the needle extending distally from the needle housing and having a first line of disruption extending along a top side of the needle, the first line of disruption configured to allow separation of the needle therealong, and A needle retraction mechanism configured to retract the needle proximally into the needle housing prior to advancing the catheter distally of the needle housing, the needle housing surrounding a portion of one or both of the needle and the needle retraction mechanism about the longitudinal axis, wherein the needle retraction mechanism comprises one or more levers, gear mechanisms, or ratchet mechanisms coupled to a needle hub of the needle and configured to retract the needle proximally into the needle housing by converting the needle into a planar shape and rolling the planar shaped needle about an axis extending perpendicular to the longitudinal axis.
2. 2. The catheter placement system of claim 1, wherein the needle housing further comprises a needle retraction lever hingedly coupled to the needle housing and configured to actuate the needle retraction mechanism to retract the needle proximally.
3. 3. The catheter placement system of claim 1, wherein the needle comprises a sheath disposed on an outer surface thereof, one of the needle or the sheath comprising a line of disruption.
4. 4. The catheter placement system of claim 1, further comprising a dilator and a guidewire.
5. 5. The catheter placement system of claim 4, wherein one of the dilator or the catheter comprises one of a polyetheretherketone material or a fluorinated ethylene propylene material.
6. 6. The catheter placement system of claim 4, further comprising a dilator wedge detacher disposed within the catheter housing and configured to detach the dilator along the longitudinal axis.
7. 7. The catheter placement system of claim 1, wherein the catheter housing comprises a flexible section configured to elastically deform along an axis extending perpendicular to the longitudinal axis.
8. 8. The catheter placement system of claim 1, wherein the catheter housing comprises an aperture extending through a sidewall of the catheter housing and comprising a flexible membrane barrier disposed thereabove.
9. 9. The catheter placement system of claim 1, wherein the catheter housing comprises a pleated section that is transitionable along the longitudinal axis between an extended configuration and a collapsed configuration.
10. 10. The catheter placement system of claim 1, wherein the catheter housing is configured to rotate about the longitudinal axis to detach from the needle housing and to split the needle housing along the longitudinal axis.
11. 11. The catheter placement system of claim 1, wherein the catheter housing comprises a blood flashback indicator releasably coupled to a proximal end of the catheter housing.
12. 12. The catheter placement system of claim 1, wherein the catheter housing comprises a guidewire housing extending from a proximal end of the catheter housing and configured to receive a portion of a guidewire therein.
13. 13. The catheter placement system of claim 12, wherein a portion of one of the catheter housing or the guidewire housing comprises a transparent material.
14. 14. The catheter placement system of claim 1, wherein the needle further comprises a second break line extending along a bottom side of the needle opposite the first break line, the needle configured to separate into a first needle portion and a second needle portion along the first break line and the second break line.

Description

Detachable needle and dilator catheter placement apparatus and related methods Priority The present application claims priority from U.S. patent application Ser. No. 63/060,639, filed 8/3/2020, the entire contents of which are incorporated herein by reference. Technical Field The present application relates to the field of medical devices, and more particularly to a detachable needle and dilator catheter placement apparatus and related methods. Disclosure of Invention Embodiments disclosed herein relate to catheter placement systems including a detachable (splittable) needle and a detachable dilator. The system includes a housing having one or more flexible sections and having a pleating section (pleated section). The user may grasp the elongate medical device using the flexible section and transition the pleated section of the housing between an extended (expanded) configuration and a collapsed (collapsed) configuration to push the elongate medical device proximally or distally. In addition, the housing includes a needle retraction mechanism (needle retraction mechanism) configured to split the needle along the longitudinal axis and roll up the separated portions to allow one or more elongate medical devices to pass therebetween. The system also includes a dilator detacher configured to separate the dilators along the longitudinal axis and radially displace the dilator portions to allow one or more elongate medical devices to pass therebetween. Advantageously, the system maintains the elongate medical device in a sterile environment, thereby mitigating the introduction of pathogens and the like. Disclosed herein is a catheter placement system including a catheter housing defining a longitudinal axis, an elongate medical device disposed within an interior chamber (cavity) of the catheter housing, and a needle housing including a needle extending distally from the needle housing, the needle housing releasably coupled to a distal end of the catheter housing and including a needle retraction mechanism configured to split and retract the needle into the needle housing along the longitudinal axis. In some embodiments, the needle housing includes a needle retraction lever hingedly coupled to the needle housing and configured to actuate a gear mechanism disposed within the needle retraction mechanism. In some embodiments, the needle retraction mechanism is configured to roll up a portion of the needle about an axis extending perpendicular to the longitudinal axis. In some embodiments, the needle includes a sheath disposed on an outer surface thereof, one of the needle or the sheath including a break line. In some embodiments, the elongate medical device comprises one of a dilator, a catheter, or a guidewire. In some embodiments, one of the dilator or the catheter comprises one of a Polyetheretherketone (PEEK) material or a Fluorinated Ethylene Propylene (FEP) material. In some embodiments, the catheter housing includes a flexible section configured to elastically deform along an axis extending perpendicular to the longitudinal axis. In some embodiments, the catheter housing includes an aperture extending through a sidewall of the catheter housing and including a flexible film barrier disposed over the aperture. In some embodiments, the catheter housing includes a pleated section that is transitionable along the longitudinal axis between an extended configuration and a collapsed configuration. In some embodiments, the catheter housing is configured to rotate about the longitudinal axis to detach from the needle housing and to detach the needle housing along the longitudinal axis. In some embodiments, the catheter placement system further comprises a dilator wedge detacher disposed within the catheter housing and configured to detach the dilator along the longitudinal axis. In some embodiments, the catheter housing includes a blood flashback indicator (blood flash indicator) releasably coupled to the proximal end of the catheter housing. In some embodiments, the catheter housing includes a guidewire housing extending from a proximal end of the catheter housing and configured to receive a portion of a guidewire therein. In some embodiments, a portion of one of the housing or the guidewire housing comprises a transparent material. Also disclosed is a method of placing a catheter including providing a catheter placement system having a catheter housing including a flexible section and a pleating section, an elongate medical device a portion of which is disposed within the catheter housing, and a needle housing releasably coupled to a distal end of the catheter housing and including a needle extending from the needle housing, accessing a vasculature of a patient, deforming the flexible section to grasp a portion of the elongate medical device disposed below the flexible section, transitioning the pleating section between an extended configuration and a collapsed configuration, releasing the flexible section to release t