Alan Anson Wanderer
Physician at Clarkson, Englewood, CO

4731059, Mar 15, 1988

Oct 14, 1986

6/918020

Alan A. Wanderer - Englewood CO
William E. Sagstetter - Denver CO

Medical Safety Products, Inc. - Denver CO

A61B 514

604192

This invention relates to a combination needle shield/needle guard device that is positively locked onto detachable needle assemblies for an evacuated blood collection system and for a hypodermic syringe. More particularly, this invention can: (1) function as a needle shield to enclose and prevent contamination of the sterile needle to be used for a medical procedure; (2) function as a needle guard which can slide on a length extension for either needle assembly, such that the needle can be uncovered or re-covered in a direction from behind the needle point, thereby providing a safety feature for the operator who can avoid direct contact with a used, blood-contaminated needle point. Avoidance of direct contact with used needle points will reduce the likelihood of contracting blood-borne infections such as AIDS, infectious hepatitis, syphilis etc. that might occur following accidental puncture with contaminated needles; (3) provide improved securing for an evacuated blood collection system between the double-ended needle assembly and the container holder, thereby preventing the double-ended needle assembly from unlocking with the container holder during the process of withdrawing blood into an evacuated container and (4) improve blood withdrawing success with the blood evacuated collection system and with a large volume syringe.

5219333, Jun 15, 1993

Feb 28, 1992

7/828309

William E. Sagstetter - Denver CO
Alan A. Wanderer - Englewood CO

Medical Safety Products, Inc. - Denver CO

A61F 528

604110

An insert (14) for supporting a double ended needle (94, 98) during a blood collection procedure is translatably mounted with a cylinder (12) for retracting the anterior needle (98) into the cylinder (12) on completion of the procedure to prevent needle stick while the posterior needle (94) remains continually shielded against needle stick by the insert (14). An anterior lock position stabilizes the double ended needle (94, 98) during the blood collection procedure and a posterior lock position retains both ends (94, 98) of the needle shielded. Ramps (130, 132) may be associated with the posterior lock position to prevent further translation of the insert (14) and reuse of the holder (10). For a reusable holder embodiment, the used double ended needle (94, 98) is retracted, safely enclosed and locked inside the cylinder (12). The anterior end (30) of the cylinder (12) is adapted for receiving the open end (90) of a conventional needle shield (96) to permit gripping of the needle supporting hub (92) and disengagement of the needle (94, 98) from the insert (14) without exposure to needle stick.

4664653, May 12, 1987

Feb 24, 1986

6/832084

William E. Sagstetter - Denver CO
Alan A. Wanderer - Englewood CO

A61M 500

604197

One step manually activated injection apparatus capable of injecting multiple pre-measured doses of liquid medicaments without visibility of needle. It is composed of cylindrical housing unit with small aperture at bottom and removeable manual plunger unit at the top, and within housing unit there is a syringe unit composed of a piston, ampule with pre-measured liquid medicament, needle covered with sterile sheath and clip apparatus attached onto the ampule. The injection apparatus is placed in ready position by contacting the bottom of housing unit against a skin surface. One forward manual push on manual plunger unit performs two distinct functions. First, the manual plunger unit engages the clip apparatus attached to syringe ampule, permitting forward movement of syringe unit within housing unit, allowing needle to pierce sheath and pass externally through aperture of housing unit without visibility into the skin. Secondly, a continuous forward push on manual plunger unit allows clip apparatus to move into reduced diameter transitions in housing unit, forcing clips internally to contact onto ampule, permitting manual plunger unit to disengage from clip apparatus and move forward exerting pressure on syringe piston, which pushes liquid medicament through needle into the skin. After injection of liquid medicament, radial pressure exerted by clip apparatus against internal diameter of manual plunger unit permits removal of syringe unit (i. e.

5181524, Jan 26, 1993

Sep 26, 1991

7/765956

Alan A. Wanderer - Englewood CO
William E. Sagstetter - Denver CO

Medical Safety Products, Inc. - Denver CO

A61B 500, A61M 532

128764

A needle guard attached to the barrel of a hypodermic syringe encloses and shields the needle against contamination prior to use and prevents inadvertent direct contact therewith by medical personnel after use. Development of an aperture at the end of the needle shield to accommodate protrusion by the needle is effected by a removable member. Translation of the needle guard along the syringe barrel to uncover and recover the needle is effected by manipulation from a location rearwardly of the needle point to further protect the medical personnel. A double ended needle, usually used with a collection tube holder of a blood evacuation system, includes a needle guard which may interlock with the holder upon translation of the needle guard to expose the anterior needle and to prevent inadvertent disengagement with the holder and resulting exposure of the posterior needle. An extension of the interconnection between the double ended needle and the holder permits large girth holders to be employed without compromising the preferred needle entry angle. Other embodiments of the needle guard include telescoping guards to shield lengthy single needles and double-ended needles, each of which is manipulated from a location rearwardly of the respective needle end.

5120311, Jun 9, 1992

Nov 1, 1989

7/430311

William E. Sagstetter - Denver CO
John E. Cooke - Lakewood CO
Louis E. Greenberg - Denver CO
Alan A. Wanderer - Englewood CO

Medical Safety Products, Inc. - Denver CO

A61M 500

604110

An insert for supporting a double ended needle during a blood collection procedure is translatably mounted within a cylinder for retracting the anterior needle into the cylinder on completion of the procedure to prevent needle stick while the posterior needle remains continually shielded against needle stick by the insert. An anterior lock position stabilizes the double ended needle during the blood collection procedure and a posterior lock position retains both ends of the needle shielded. A ramp may be associated with the posterior lock position to prevent further translation of the insert and reuse of the holder. For a reusable holder embodiment, the used double ended needle is retracted, safely enclosed and locked inside the cylinder. The anterior end of the cylinder is adapted for receiving the open end of a conventional needle shield to permit gripping of the needle supporting hub and disengagement of the needle from the insert without exposure to needle stick. A replacement needle may then be mounted in the insert and the holder reused.

4693708, Sep 15, 1987

Oct 16, 1986

6/919373

Alan A. Wanderer - Englewood CO
William E. Sagstetter - Denver CO

A61M 532

604198

This invention relates to a combination needle shield/needle guard device for a hypodermic syringe with a needle permanently attached to the front end of the syringe barrel. This needle shield/needle guard device is positively locked to the syringe barrel and can perform two functions: first, function as a needle shield which encloses and prevents contamination of a sterile needle and secondly, function as a needle guard which can slide on the surface of the syringe barrel, such that the needle can be uncovered and re-covered from behind the needle point, thereby providing a safety feature in that medical personnel can avoid direct contact with a needle point during the process of uncovering or re-covering the needle. More particularly, an unused sterile hypodermic needle is enclosed within the needle shield/needle guard device which protects the needle from contamination. Exteriorization of the needle from inside the needle shield/needle guard device occurs after an aperture is created by pulling off a tab at the front end of the needle shield/needle guard device and then retracting the needle shield/needle guard device on the syringe barrel, permitting the needle to exteriorize through the aperture.

4878902, Nov 7, 1989

Feb 25, 1988

7/160150

Alan A. Wanderer - Englewood CO
William E. Sagstetter - Denver CO

A61M 532

604192

A non-rotatable axially translatable anterior guard exposes, upon posterior translation along a needle supporting hub, the anterior end of the needle ready for use. Upon anterior translation of the anterior guard, it lockingly engages the hub to retain the needle therein. A detachable tab creates an aperture in the anterior guard for exteriorizing the needle and upon attachment seals the aperture to isolate within the anterior guard, in combination with the fit between the hub and the anterior sleeve, any body substances remaining with the needle after use. A removable posterior guard encloses the posterior end of the hub to receivingly retain any body substances remaining therewith after use of the needle. The anterior and posterior guards, in combination with sealing tape, permit sterilizing the needle prior to use and isolating there within any body substances after use.

5030209, Jul 9, 1991

Nov 9, 1988

7/269168

Alan A. Wanderer - Englewood CO
William E. Sagstetter - Denver CO
William R. King - Lakewood CO
James W. Schreiber - Lakewood CO
Randal D. Bjerke - Boulder CO

Medical Safety Products, Inc. - Denver CO

A61M 532

604198

A holder includes a double ended needle supporting insert translatable within a cylinder for receiving a blood collection tube during a medical procedure. Upon translation of the insert posteriorly, the double ended needle becomes fully enclosed within the cylinder and the insert is locked in place to shield the double ended needle from contact by medical personnel. An adapter fits within the insert to accommodate pediatric tubes.

4850961, Jul 25, 1989

Jul 30, 1987

7/079599

Alan A. Wanderer - Englewood CO
William E. Sagstetter - Denver CO

A61M 532

604 53

An indwelling placement device having an introducing needle and a catheter for infusing fluids into a blood vessel incorporates a guard for shielding the needle prior to extension from therewithin and for receiving the needle upon retraction thereinto to preclude an operator inadvertently contacting the needle after use. Once retracted, the needle cannot be extended from within the guard. Upon retraction of the needle into the guard, a button mates with the open end of a hollow hub of the needle to prevent outflow of residual blood therefrom. A valve is incorporated with the catheter to preclude blood outflow from the catheter upon withdrawal of the needle and prior to attachment of an intravenous line for conveying a fluid to be intravenously administered.