2008 Model CSLT08 Cartridge Syringe

Shown here disassembled

Consisted of three parts.

  1. A tubular nosepiece designed to hold a cartridge filled with cement
  2. A mid piece which attaches to the nosepiece after cartridge is inserted. Internally threaded to accept a large but finely threaded plunger
  3. A threaded plunger which pushes on the ball-driver which extrudes the cement.

All parts are 303 Stainless Steel for long life. This version was first used in January of 2008. Two dentists are primarily responsible for the changes. First Dr. Mona Kakar of Mumbai, India who suggested the larger threaded plunger. Next Dr. Steve Pickering of Santa Barbara, CA who suggested the handle extending out from the midpiece. Thank y'all. Dentists working together. :)

2008 Model CSLT08 Cartridge Syringe

T-Handle has several advantages

  1. Larger threads but with the same pitch as the older smaller 1/8 in diameter. Although the function is the same, in that the same number of turns produce the same amount of cement, it is much sturdier, much less likely to strip and virtually impossible to bend or break.
  2. A T-Handle which gives even dentists with smaller hands the leverage to extrude the newer, harder, thicker cements.
  3. Creates a better ability to determine exactly how far the plunger has been turned thus metering cement with much more precision.

2008 Model CSLT08 Cartridge Syringe

L-Handle Mid Piece

  1. In an effort to make the syringe easier to keep clean we at first made the syringe smoother but this made it difficult to hold onto while extruding.
  2. An old friend, Dr. Steve Pickering of Santa Barbara, CA suggested that a handle extending out from the mid piece might do the job. We sent him a prototype and as a result of his suggestion we incorporated it into every one now sold.
  3. Holding the syringe in one hand while turning the plunger is now simple and it is unnecessary to squeeze the barrel with a "death grip" to keep it from slipping.

2008 Model CSLT08 Cartridge Syringe

Syringe in hand

  1. As you can see, the syringe is small and unobtusive and yet has the power to extrude almost any cement through the bore of a small needle.
  2. As before the particle size of the cement determines which size needle can be used but three common sizes, 30 gauge (0.29mm OD), 27 gauge (0.39mm OD) and 25 gauge (0.49mm OD) are available.
  3. Holding the syringe in one hand while turning the plunger is now simple and it is unnecessary to squeeze the barrel with a "death grip" to keep it from slipping.

2008 Model CSLT08 Cartridge Syringe

Plunger and Cartridge

  1. Plunger (ball driver actually) has a tip designed to "cup" the ball that pushes the cement through thus eliminating any surging of the cement due to distortion of the nylon ball.
  2. The proximal end of the threaded plunger fits the distal end of the ball driver to keep it centered.
  3. The distal end of the cartridge itself fits snugly into the proximal end of the syringe mid-piece thus stabilizing it and keeping it from rotating. When the mid piece is screwed tightly onto the nosepiece there is a small 0.0030" gap between the two parts.

Precision Endo Syringe 1978 - First sold in January of 1978.

Discontinued when Multi_Mode Syringe was introduced in about 1994.

Consisted of three parts.

  1. a tubular barrel with large thread on the distal end to accept the plunger guide knob
  2. a plunger guide knoba a
  3. threaded plunger which pushed directly on the ball valve to extrude the cement.

Needles were attached directly to the barrel/handle and required a delrin washer to form a pressure seal.
Multi_Mode Syringe 1994 - Instead of having a plunger that pushed directly on the ball valve, the plunger pushes on a ball driver.

This had the advantage of allowing the tip of the ball driver to be concave so the ball did not distort in use, thus eliminating the main cause of "surging" and delayed reaction.

Additionally the barrel now was separated from the handle thus allowing multiple barrels to make pre-loading possible.

Needles were attached to one end of the hexagonal barrel which was then attached to the handle.

Delrin washers sealed between the needle and barrel.
PDL Intraligamentary Syringe was immediately accepted by the profession as the standard to replace the large, cumbersome, pistol-grip syringes on the market.

It offered (and still does) precise control and leverage.

Instead of squeezing a handle, a lever is pressed with the finger or thumb, which was now possible because of the compound lever nature of the system, which requires much less operator pressure to acheive the same pressure in the periodontal ligament.
Multi-Mode Cartridge Endo Syringe 2002 - Eliminated one sore point of the previous designs by making cleanup unnecessary.

Since the barrel was now a cartridge, it could simply be discarded after use.

It also eliminated the washers as now the needle was molded into the "barrel".

Furthermore ball valves are now included with each cartridge, thereby eliminating the need to maintain a separate inventory.

Cartridges are available in 30, 27 and 25 gauge and 30mm length.
Knurled Driver Knob Driver Knob plus Driver Guide Knob
Cartridge Nosepiece with Cement Cartridge/Needle Cement Cartridge partially inserted in Cartridge Nosepiece
Cement Cartridge Designed to fit Cartridge Syringe Nosepiece Cartridge with ball driver partly assembled

File Name is: SYR_PICS.HTM