A second French invention, also given a pretentious name, was Damoiseau’s “terabdella” (meaning “large leech”), or pneumatic leech. This invention, introduced some time before 1862, met with skepticism at the outset on the part of the reviewers at the French Academy of Medicine. It consisted of two pistons attached to a plate to be placed on the floor and held down by the feet of the operator. Each piston was connected by a tube to a cup, and the whole apparatus was operated by means of a hand lever connected with both pistons. More a cupping device than an artificial leech, the terabdella met with little success beyond the French province where Damoiseau practiced.[189] (Figure [21].)

Perhaps the most successful of the mechanical leeches was known as Heurteloup’s leech, after its inventor, the Frenchman, Charles Louis Heurteloup (1793-1864). Sold in most late nineteenth-century surgical catalogs for as much as $15.00, the device consisted of two parts, one a spring scarificator that made a small circular incision (about 5 mm in diameter) and the other, a suction pump, holding an ounce of blood, whose piston was raised by means of a screw. For the treatment of eye ailments, one of the major purposes for which the device was invented, it was applied to the temples.[190] A similar two-part mechanical leech was sold under the name “Luer’s Leech.”

One of the most interesting leech substitutes, sold by George Teimann & Co. as its “Patent Artificial Leech,” employed ether in exhausting the glass “leeches.” Patented by F. A. Stohlmann and A. H. Smith of New York in 1870, the “leech” consisted of a glass tube, either straight or with a mouth on the side so that the tube would hang somewhat like a living leech. To expel air from the tube, a few drops of ether were placed in it, after which it was immersed to its mouth in hot water until the ether vaporized. The tube was then applied to the skin and allowed to cool, thus sucking blood from a wound made by the scarificator, a long metal tube that was rotated to make a circular incision. One of the patentees explained the advantages of the device:

In all previous attempts at an artificial leech the vacuum has been produced by the action of a piston. This renders the instrument too heavy to retain its position, and necessitates its constantly being held. This precludes the application of any number at once, even if the cost of half-a-dozen such instruments were left out of the account. But in the case of this leech, the tubes, being exceedingly light, attach themselves at once, remaining in position until filled; and as the cost of them is but a few cents, there is no limit to the number which may be applied.[191]

To take the place of leeches in the uterus, quite a number of uterine scarificators were sold. These were generally simple puncturing instruments without spring mechanisms. If insufficient blood flowed from the scarification, Thomas’s Dry Cupper, a widely available vulcanite syringe, could be inserted into the vagina to cup the cervix before puncturing.[192] At least one attempt was made to combine puncture and suction in a device for uterine application. This was Dr. William Reese’s “Uterine Leech,” introduced in 1876. It consisted of a graduated glass cylinder 190 mm long and 12 mm in diameter containing a piston and a rod with a spear point. The rod was surrounded by a spring that withdrew the blade after it punctured the cervix. Several American companies, including George Tiemann & Co., offered the device for sale.[193]

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Figure 21.—Damoiseau’s terabdella. (From Damoiseau, La Terabdelle ou machine pneumatique, Paris, 1862. Photo courtesy of NLM.)

Despite all the efforts to find a suitable substitute, the use of natural leeches persisted until the practice of local bloodletting gradually disappeared in America. By the 1920s leeches were difficult to find except in pharmacies in immigrant sections of large cities like New York or Boston. One of the last ailments to be regularly treated by leeches was the common black eye. Leeches commanded rather high prices in the 1920s, if they could be found at all. One Brooklyn pharmacist, who deliberately kept an old-fashioned drugstore with the motto “No Cigars, No Candy, No Ice Cream, No Soda Water, But I Do Sell Pure Medicines,” wrote in 1923: