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US 9,314,201 B2Granted
Removable flash chamber
AssigneeBecton, Dickinson and Company
InventorsJonathan Karl Burkholz, Minh Quang Hoang
Life of this patent
Estimating the term…
Abstract
A needle hub and catheter assembly are disclosed herein. The needle hub includes an introducer needle having a lumen extending therethrough. A needle hub is coupled to a proximal end of the introducer needle. A flash chamber is removably coupled to the needle hub or the introducer needle. An interior of the flash chamber is in fluid communication with the lumen of the introducer needle when the flash chamber is coupled to the needle hub or the introducer needle. As such, the flash chamber can collect a sample of blood that can be accessed when the flash chamber is removed. In some instances, the blood can also be dispensed from the flash chamber into a test strip or other testing device.
Claims19
A catheter assembly comprising:
- a catheter hub;
- an introducer needle having a lumen extending therethrough;
- a needle hub coupled to a proximal end of the introducer needle, the needle hub forming an internal chamber having a proximal opening;
- a flash chamber having a distal end that is positioned within the internal chamber and is removably coupled to the needle hub, an interior of the flash chamber being in fluid communication with the lumen of the introducer needle when the flash chamber is coupled to the needle hub;
- and
- a safety barrel removably coupled to the catheter hub, the safety barrel being configured to capture a sharpened distal tip of the introducer needle when the needle hub is withdrawn proximally within the safety barrel, a proximal end of the flash chamber being positioned within the safety barrel prior to the needle hub being withdrawn proximally within the safety barrel, the safety barrel having a proximal opening configured to allow the flash chamber to extend proximally out through the safety barrel when the sharpened distal tip is captured within the safety barrel thereby allowing the flash chamber to be decoupled from the needle hub, the proximal opening being sized to prevent the needle hub from extending through the proximal opening.
3 more elements
A catheter assembly comprising:
- a catheter adapter;
- and
- a needle assembly comprising:
- an introducer needle having a lumen extending therethrough;
- a needle hub coupled to a proximal end of the introducer needle, the needle hub forming an internal chamber having a proximal opening;
- a flash chamber having a distal end that is positioned within the internal chamber and is selectively coupled to the needle hub or the introducer needle, an interior of the flash chamber being in fluid communication with the lumen of the introducer needle when the flash chamber is coupled to the needle hub;
- and
- a safety barrel removably coupled to the catheter hub, the safety barrel being configured to capture a sharpened distal tip of the introducer needle when the needle hub is withdrawn proximally within the safety barrel, a proximal end of the flash chamber being positioned within the safety barrel prior to the needle hub being withdrawn proximally within the safety barrel, the safety barrel having a proximal opening configured to allow the flash chamber to extend proximally out through the safety barrel when the sharpened distal tip is captured within the safety barrel thereby allowing the flash chamber to be decoupled from the needle hub, the proximal opening being sized to prevent the needle hub from extending through the proximal opening.
5 more elements
A catheter assembly comprising:
- a catheter adapter from which a catheter extends distally;
- a safety barrel secured to a proximal end of the catheter adapter, the safety barrel having a proximal opening;
- a needle hub contained within the safety barrel, the needle hub including an introducer needle that extends distally from the needle hub within the catheter when the needle hub is in a first position, the needle hub forming an internal chamber having a proximal opening;
- a flash chamber having a distal end that is positioned within the internal chamber and that is secured to a proximal end of the needle hub, the flash chamber being in fluid communication with the introducer needle, the flash chamber being removable from the needle hub, a proximal end of the flash chamber being positioned within the safety barrel when the needle hub is in the first position;
- wherein the needle hub is configured to move proximally within the safety barrel to a second position to withdraw the introducer needle into the safety barrel, the proximal movement causing the flash chamber to move proximally through the proximal opening of the safety barrel thereby allowing the flash chamber to be decoupled from the needle hub and removed from within the safety barrel while the needle hub remains within the safety barrel, the proximal opening being sized to prevent the needle hub from extending through the proximal opening.
2 more elements
Dependencies are inferred from the claim text.